When seeing a doctor, according to the doctor's diagnosis and prescription, patients may need to buy corresponding drugs and medical devices. Drugs can include prescription drugs, over-the-counter drugs and Chinese herbal medicines. Used to treat diseases or relieve symptoms. Medical instruments refer to various medical equipment, appliances or auxiliary articles such as sphygmomanometer, blood glucose meter and catheter. , used to monitor physical health or for treatment. These items are purchased in order to cooperate with the doctor's treatment plan, improve the treatment effect and relieve the condition.