Biopsy usually refers to biopsy histopathological examination, which is a clinical examination technique that removes diseased tissues from the body surface or body of the examined person by means of cutting, clamping or puncture, and conducts pathological examination. By analyzing the removed tissues, the diagnosis and evaluation of the type, nature, etiology and treatment effect of the disease can be made: 1. Biopsy site: there are many tissues and organs that can be biopsied clinically, such as skin, appendix, thyroid, lung, liver, kidney, stomach, lymph nodes, bone tissue, etc.; 2. Sampling methods: there are many ways to take tissues for biopsy, such as using endoscopy, puncture and other techniques for Biopsy; 3, the purpose of examination: clinically biopsy is mainly used for the detection of the nature of the tumor, such as to determine the benignity and malignancy of the tumor, but also can be used to determine whether the body has certain specific infectious diseases, such as tuberculosis, or for the diagnosis of the development and nature of the disease before surgery or after treatment, in order to confirm the patient’s treatment plan. In gynecology, biopsy is also commonly used to diagnose cervical diseases, such as cervical polyps, chronic cervicitis, cervical precancerous lesions, HPV virus infection, etc.; 4, the impact on the organism: biopsy is mostly traumatic examination, which may cause some damage to the organism, and different sampling methods have different degrees of damage to the organism, such as surgical sampling is more damaging to the organism, while cervical biopsy, gastroscopy biopsy, etc. are less damaging to the organism. The damage to the body is less.