OVERVIEW
Most convictions for trafficking in dangerous drugs result in immediate imprisonment. The Department of Justice decides the appropriate court in which to bring the charge by reference to the seriousness of the case and the likely sentence, with the type and quantity of drug being central considerations. Trafficking charges may therefore be dealt with across Hong Kong's criminal courts, from the Magistrates' Courts to the District Court and the Court of First Instance of the High Court. The maximum sentence is life imprisonment. The length of imprisonment will usually be determined principally by the type and quantity of dangerous drug involved, while personal circumstances generally count for little. Trafficking is an excepted offence, meaning that the court cannot suspend a sentence of imprisonment.
STATUTORY PROVISIONS
Section 4(1) of the Dangerous Drugs Ordinance (Cap. 134)
The relevant part of the current statutory provision states:
“Save under and in accordance with this Ordinance or a licence granted by the Director hereunder, no person shall, on his own behalf or on behalf of any other person, whether or not such other person is in Hong Kong—(a) traffic in a dangerous drug; (b) offer to traffic in a dangerous drug or in a substance he believes to be a dangerous drug; or (c) do or offer to do an act preparatory to or for the purpose of trafficking in a dangerous drug or in a substance he believes to be a dangerous drug.”
ELEMENTS OF THE OFFENCE
The Act (Actus Reus)
The defendant carried out or assisted with an act of distribution, import, export, supply or storage of the substance for the purpose of trafficking.
The Intent (Mens Rea)
The defendant knew that they were handling a dangerous drug and intended it to be distributed rather than kept purely for personal consumption. Deliberate blindness may support an inference of knowledge, but mere carelessness or recklessness is not enough.
Maximum Penalty and Excepted Offence
- Under the Dangerous Drugs Ordinance (Cap. 134), the maximum penalty for trafficking in a dangerous drug on conviction upon indictment is life imprisonment and a fine of HK$5,000,000.
- Under Schedule 3 of the Criminal Procedure Ordinance (Cap. 221), drug trafficking is explicitly listed as an "Excepted Offence". In other words, it is not possible to receive a suspended sentence for a conviction of trafficking.
SENTENCING GUIDANCE
Current Sentencing Tariffs
- The current sentencing tariffs for drug trafficking in Hong Kong reflect the Court of Appeal's landmark decision in HKSAR v Huang Ruifang [2025] HKCA 234. The judgment revised the quantity-based starting points for trafficking in cocaine, heroin and methamphetamine, creating a flatter sentencing curve for exceptionally large quantities.
- For offences involving more than one type of dangerous drug, HKSAR v Yau Kai Fung [2026] HKCA 885 streamlined the sentencing approach. The Court of Appeal held that the former absurdity and conversion tests no longer serve a useful or principled purpose, leaving the ratio test only as a secondary cross-check.
SENTENCING TARIFFS
Tariffs for Cocaine, Heroin and "Ice" (Methamphetamine)
The sentencing guidelines in HKSAR v Huang Ruifang [2025] HKCA 234 set out quantity-based imprisonment starting points after trial. Cocaine and heroin share one tariff; “Ice” has different bands below 1,500 grams.
Cocaine and Heroin
2 to 5 years
5 to 8 years
8 to 12 years
12 to 16 years
16 to 20 years
20 to 24 years
24 to 27 years
27 to 30 years
At the judge's discretion, bearing in mind a practical ceiling of 35 years and life imprisonment for cases of truly exceptional gravity
“Ice” (Methamphetamine)
3 to 7 years
7 to 11 years
11 to 15 years
15 to 18 years
18 to 20 years
20 to 24 years
24 to 27 years
27 to 30 years
At the judge's discretion
- These are quantity-based starting points after trial, not automatic final sentences.
- A defendant's role and culpability—including an organisational, managerial or international syndicate role—may justify an upward adjustment.
SENTENCING TARIFFS
Tariffs for Cannabis (Marijuana)
Following HKSAR v Nguyen Thang Loi and Dang Hung Ngoc [2023] HKCA 103, Hong Kong's Court of Appeal aligned the sentencing guidelines for herbal cannabis and cannabis resin. Both are now sentenced under the same quantity-based framework, calculated by the gross weight of the cannabis seized.
Herbal Cannabis and Cannabis Resin
Up to 16 months
16 to 24 months
24 to 36 months
36 to 48 months
48 to 66 months
66 to 96 months
96 to 120 months
120 months or above
- These are guideline starting points; the final sentence depends on the structured sentencing exercise and the facts of the case.
- Cannabis oil may justify an upward adjustment because of its more damaging effect.
SENTENCING METHOD
A Streamlined Sentencing Approach
When applying the quantity-based tariffs, judges do not treat the calculation as an automatic sentence. Following HKSAR v Herry Jane Yusuph [2021] 1 HKLRD 290, and subsequent Court of Appeal guidance, the court applies a structured approach.
The Structured Approach
Assess the gravity of the offence by reference to the type and verified quantity of the dangerous drug, then identify the applicable tariff band.
Determine the defendant's actual role. The guideline tariffs generally assume the lower culpability of a courier or storekeeper; a managerial, organisational or direct-trafficking role may justify enhancement.
Place the offence at an appropriate point within the guideline band by reference to the quantity, role and overall culpability.
Increase the starting point for proven aggravating features not already reflected in the tariff or role assessment, while avoiding double counting.
Apply any proper mitigation, including the appropriate guilty-plea discount and, where applicable, substantial assistance to law enforcement. Personal and family circumstances generally count for little unless exceptional.
Stand back and ensure that the resulting sentence is fair, just and balanced in all the circumstances, including the totality of multiple offences.
- A guilty plea at the earliest reasonable opportunity will ordinarily attract the full one-third discount, but the available discount depends on its timing and circumstances.
- The presence of an international element does not automatically justify enhancement; the court must consider the defendant's knowledge and the particular facts.
HOW MCS CAN ASSIST
Advice and representation
MCS can assess the charge, the statutory elements and the prosecution evidence; advise on interview, plea, trial and sentence; and identify any defence or evidential issue available on the facts.