Drug testing is a very complicated job. Generally speaking, drug inspection is divided into several parts: character, physical and chemical inspection, microbial inspection and other safety indicators (such as pyrogen, abnormal toxicity, etc. ). Drug inspection shall be carried out one by one according to the quality standards of the products to be inspected, and the operation shall be carried out in strict accordance with the current China Pharmacopoeia. The general process of drug inspection includes sampling, sampling and inspection one by one according to the inspection items, and quality evaluation (qualified or unqualified) based on all the data. Sampling process: put the sample to be tested into the sampling vehicle (or the operating platform of clean area), let the air shower for more than 30 minutes (if there is an ultraviolet lamp, it will be irradiated for 30 minutes), open the bag for sampling under aseptic operation, seal and package it after sampling, and move it out of the sampling vehicle or clean area. General precautions: disposal of sampling instruments, packaging of samples to be sampled, aseptic operation and understanding of bacteria during sampling, and recovery of sample packaging after sampling to prevent pollution.