Early syphilis, usually referred to as early syphilis, i.e. syphilis with a course of less than 2 years, mainly includes stage I syphilis, stage II syphilis and early latent syphilis, etc. Common symptoms include hard chancre, swollen lymph nodes in the groin, syphilitic rashes, flat warts and other symptoms. 1. Chancre: The majority of chancres occur in the genital area, in the coronal groove of the penis, the foreskin, prepuce and ligament in men, and in the labia majora, labia minora, labia ligamentata, perineum and cervix in women. The manifestation of erythema, its surface formation of necrosis, cartilage-like hardness, raised edges, clear boundaries, generally painless and itchless. 2. Sclerotic lymph nodes: usually 1 to 2 weeks after the appearance of the noma, the lymph nodes in the groin or near the affected area are enlarged, isolated from each other, not adherent, with no redness on the surface, and may be mildly painful to touch. 3. Syphilitic rash: it often appears 4-6 weeks after the onset of the chancre, lacks specificity, and often manifests itself as red or reddish-brown papules, macules, plaques, etc., and may appear as scales, pustules, ulcers, etc., and the above mentioned lesions may also appear on the palmoplantar area. 4. Flat warts: they occur in the genitals, perianal areas, often manifested as flesh-colored flat papules or plaques, surface erosion, moist. It is recommended to go to the hospital as soon as possible for examination and treatment after being infected with syphilis, and to avoid sexual intercourse during the treatment period.