Phlebitis generally refers to thrombosed superficial phlebitis. Symptoms include red and swollen streaks, pain, and other symptoms related to the type of phlebitis. 1.Thrombosed superficial phlebitis: (1) Thrombosed money phlebitis of the extremities: manifested by columnar or reticular erythematous striae, pain, and elevated skin temperature. (2) Thrombosed superficial phlebitis of chest and abdominal wall: typical manifestation is the sudden appearance of pain in one side of chest and abdominal wall after pulling the upper limb with force, the pain is aggravated when the affected side of the upper limb is lifted up or abducted, and the local pain is felt by coughing, deep breathing, or pressurizing the lesion site unintentionally; the pain is gradually relieved after 2 weeks of the lesion, and disappeared after 4-8 weeks, and the individual patients have delayed their localized pain for 1~2 years. 2. Purulent superficial phlebitis: local pain, edema, erythema, etc. Pus can be squeezed out from the incision. 3. Vagrant thrombophlebitis: it occurs in the lower limbs, most of the patients suddenly have redness, stripes or reticulated stripes, some of them have mild fever, and most of each attack lasts for only 2~4 weeks, that is to say, it subsides on its own. When the above symptoms occur, patients should go to the hospital in time and receive standardized treatment under the guidance of doctors.