As an antipyretic and analgesic drug, analgesic is mainly used to reduce fever in acute fevers and to relieve headache, body pain and other symptoms. By intramuscular injection, the dosage for adults is 2 ml per dose, which can be increased to a total of 6 ml a day depending on the condition and, if necessary, with monitoring of vital signs.The dosage for children, which needs to be adjusted strictly according to age, is divided between two and five years of age. For children under two years of age, a single dose of 0.5-1 ml is administered, and for children over five years of age, the adult dosage of 2 ml can be referred to.For children of intermediate age, a single dose of 1-2 ml is administered, which can not be applied consecutively. When applying the drug, attention should be paid to the overdose can appear allergic shock, chest tightness, dizziness, nausea, purpura and other adverse reactions.