1. The prescription limit is different: the printing paper of a class of psychotropic drugs is light red, and the prescription is marked "Jingyi" in the upper right corner, and the shelf life is 3 years. The printing paper of the Prescription of Psychotropic Drugs of Class II is white, and the prescription is marked with "Jinger" in the upper right corner, and the storage period is 2 years.

2. Different sales requirements: psychotropic drugs of category I cannot be retailed, and can only be used by medical practitioners with prescription rights in narcotic drugs and psychotropic drugs of category I medical institutions. Psychotropic drugs of category II can be sold by pharmacies with sales qualifications on the basis of prescriptions issued by medical practitioners.