Local venous pressure pain is a symptom of thrombophlebitis, which is a common clinical condition. It can develop in both men and women, and is more common in young adults. The clinical features are: sudden onset of redness, burning, pain or pressure along the superficial veins, and the appearance of striae or hard nodules. After the acute phase, the cords become hard and the local skin becomes pigmented. So, how should local venous pressure pain be diagnosed? The following is a brief introduction: thrombophlebitis is mainly divided into two kinds of thrombotic superficial phlebitis and thrombotic deep phlebitis, and the former is divided into thrombotic superficial phlebitis of limbs, superficial thrombophlebitis of chest and abdominal wall veins and wandering thrombotic superficial phlebitis, etc. The latter is further divided into thrombophlebitis of the calf muscle plexus and thrombophlebitis of the iliofemoral and popliteal veins. The clinical diagnosis is made carefully according to the different features. Localized venous patients are examined for pain and tenderness in the calf and mild swelling of the calf, with a positive response to Homans sign. Calf deep vein thrombosis is also known as peripheral deep vein thrombosis. The thrombosis originates in the muscular plexus of the calf and is the preferred site for postoperative DVT. Due to its small extent, it often does not affect blood return and stimulates a mild inflammatory response with insignificant clinical manifestations. There is also a risk of pulmonary embolism.