In early 2020, the COVID-19 outbreak complicated the diagnosis, treatment and rehabilitation of patients with substance use disorders and increased the risks of substance abuse and addictive behaviours, such as online gaming disorders, in the general public.Substance use disorder is a chronic recurrent brain disease characterised by strong cravings, high recurrence rates, and a high proportion of comorbidity of mental and physical disorders.1 Therefore, regular long-term therapeutic interventions are critical to preventing drug relapses while maintaining withdrawal.