Changchongqing is best used on an empty stomach before going to bed at night, and the drug will be discharged in the morning. This drug is mainly used to treat patients infected with roundworm, hookworm, pinworm, whipworm, intestinal roundworm, etc. This drug is a prescription drug, which must be prescribed by the doctor according to the specific situation of the patient, and used according to the doctor's instructions, including dosage method, medication, dosage, medication time, etc. During the period of taking this drug, it is necessary to pay attention to the course of treatment of this drug, and it is not easy to simply stop taking the drug. When using this drug to treat patients with echinococcosis, it is necessary to pay attention to the serious allergic reactions caused by the disintegration of a large number of worms.