There are many antispasmodic and analgesic drugs, such as atropine, scopolamine, benadizine, orphenobromine, morphine, fentanyl, etc. These drugs are very effective in improving spasmodic pain, for example, atropine can be very good for the treatment of renal colic, gallbladder colic, gastrointestinal colic, etc. Fentanyl, for example, has a much stronger pain relief effect than morphine, and can be very good for the treatment of pain. It is particularly suitable for the treatment of pain arising from malignant tumors. The antispasmodic and analgesic drugs should be used reasonably under the guidance of doctors, especially according to the different conditions of patients should not make patients addicted, but also not make patients too painful, which is a test of the doctor’s wisdom and the patient’s physical condition, need to be applied carefully.