Pay attention to the period of validity of the medicine. Strictly manage the period of validity of drugs, pharmacy personnel should regularly check the time limit for the maintenance of drugs, implement the regional responsibility system, appoint pharmacists to divide responsibilities, clarify the responsibilities of pharmacists, and be responsible pharmacists to check the validity period of the drugs under management, and the regional captains often deal with drugs. The first-in-first-out principle should be followed in the distribution of medicines to ensure that all medicines distributed to patients are effectively maintained