Thrombotic superficial phlebitis is a thrombotic inflammation of the visible veins located on the body surface. The clinical manifestations are redness, swelling, heat, pain, striae or hard nodules along the superficial veins, and pain to palpation, which is a common clinical condition. Thrombosis can cause inflammation, and inflammation can cause thrombosis, and the two are causal. How to prevent thrombotic superficial phlebitis early? Proper warmth: As we know, in a warm environment blood vessels expand and the skin becomes rosy; on the contrary, the skin appears pale. Therefore, it is important to keep warm during the cold season and in air-conditioned rooms. Cold will make blood vessels contract, blood flow will be more reduced and symptoms will be more serious. Prevention of trauma and timely treatment: Trauma not only aggravates vascular damage and spasm, but also reduces the resistance to infection of the limb that is already in an ischemic state, resulting in wounds that do not heal easily. Even mycobacterial infections, such as tinea pedis, which are usually disregarded, can pose a threat to the affected limb; therefore, trauma or foot mycobacterial infections should be treated promptly once they occur. Exercise of the affected limb: Functional exercise not only prevents muscle atrophy, but also increases the blood flow to the limb, prompting the opening of vascular side branches and maintaining limb mobility. However, the affected limb exercise should not be too hasty, the amount of activity should be appropriate, that is, to not cause limb pain. Reduce blood viscosity: slow blood flow and increased blood viscosity can cause thrombosis and complete blockage of the originally narrowed artery. Treatment can be more water, usually eat more black fungus, and can take small doses of aspirin under the guidance of a doctor.