Left lateral thigh pain is common for the following reasons: First, muscle strain: prolonged standing or excessive exercise can lead to symptoms of left lateral thigh muscle pain, mainly in the vastus lateralis and lateral femoral muscle, the patient will also have local symptoms of soreness and weakness, even unable to stand and walk, and also unable to participate in sports, the pain symptoms will increase when local pressure is applied, and after hot compresses and rest, clinical symptoms will be After hot compress and rest, the clinical symptoms will be significantly relieved. Second, the recovery period after trauma: acute strain of the left lateral thigh muscle occurs, after rest and braking, the symptoms of soreness and pain will also appear in the recovery period, while local pressure, the symptoms will be more obvious. The patient usually has a clear history of trauma, especially a history of strenuous exercise, and after local braking and continuous hot compress treatment, the clinical symptoms can be relieved rapidly. Early diagnosis and treatment of soreness in the left lateral thigh can quickly relieve clinical symptoms and enable the patient to resume normal life, work and exercise.