Sexually transmitted diseases (STDs) are a group of diseases that can be contracted mainly through sexual contact. The common ones are syphilis, gonorrhea, condyloma acuminatum, genital herpes, non-gonococcal urethritis, soft chancre, AIDS, and lymphogranuloma venereum. The disease may not have any obvious signs before the disease, or some of the abnormal symptoms may appear, and the diagnosis is confirmed after detection. The most common STDs with painful elevations are genital herpes, soft chancre, lymphogranuloma venereum, etc., while elevations without obvious pain are commonly found in the hard chancre of stage I syphilis and early stage of condyloma acuminatum, etc.; 2. Abnormal discharge: Most patients visit the doctor because they notice abnormal discharge from the urethra or anus, such as gonorrhea and non-gonococcal urethritis can appear mucous or purulent discharge, and genital herpes patients can have rectal discharge before visiting the doctor. The patient may have a rectal discharge, involving the anus, can be found abnormal when defecating, in addition, patients with acromegaly can appear early abnormal discharge from the external genital organs; 3, abnormal urination sense: due to pathogenic bacteria infection, can lead to inflammation of the urethra, such as gonorrhea, non-gonococcal urethritis, acromegaly, etc. When there is pain, burning and difficulty in urination, or itching in the urethra, redness and swelling of the urethra, patients need to seek timely medical treatment; 4. “In addition, some patients with genital herpes may feel swollen and painful in the lymph nodes of the sulcus, commonly seen in soft chancre and STD lymphogranuloma. In addition, some patients with genital herpes may occasionally develop fever, headache, and weakness before obvious skin lesions, which also require extra attention. Most STDs can be cured by early detection and systematic treatment, so patients are advised to seek medical attention if they find abnormal symptoms and not to delay the diagnosis and treatment of the disease due to feelings such as difficulty in talking about it.