If phlebitis is not very serious and there is no localized swelling and pain, it will resolve on its own within a week or two, i.e., it will heal naturally. However, if it produces symptoms such as swelling and pain, infection, etc., it usually does not heal naturally. Symptoms of phlebitis and its recovery can be differentiated according to the location, and it can be commonly divided into two kinds of phlebitis in upper limbs and lower limbs.1. Phlebitis of upper limbs: often caused by venous occlusion due to inflammatory stimulation such as intravenous infusion, blood collection, and so on, and it can be palpated as striated material in the upper limbs, and it can show symptoms such as redness, swelling, heat, and pain in the early stage, accompanied by the venous direction, and the sensation of striated foreign body, and it can be relieved if it is not given any stimulation for most of the time in 2-3 weeks. Symptoms can be relieved without other stimuli for 2-3 weeks. At this time, the superficial veins are occluded and the possibility of complete self-healing is very small. In this case, you can use potato chips to apply wet compresses, and you can also use topical medications, such as Mucopolysaccharides Polysulfate Cream, Microcellulose Gel and other topical medications, which can play a very good therapeutic role. 2. Phlebitis of lower limbs: often, it is due to the fact that varicose veins are not treated in time, and superficial venous thrombus is formed in varicose veins, and superficial venous thrombus further stimulates the veins and their surrounding tissues, resulting in phlebitis. Patients with this type of phlebitis usually do not recover on their own, and most of them rest in bed for 2-3 weeks, and the symptoms such as redness, swelling, heat and pain can be relieved to some extent. It can be treated with anti-infective and anti-coagulant drugs at the same time, but it cannot achieve a radical cure. If there is a cold, fever, bathing or swimming, etc., it will lead to the recurrence of phlebitis. Varicose vein surgery is recommended to achieve a radical cure and prevent the recurrence of phlebitis.