The right thigh vague pain causes are as follows: 1, may be caused by varicose veins in the lower extremities, long-term standing work is very easy to appear varicose veins in the lower extremities, the lower extremities will have the symptoms of soreness and swelling, there will also be pain along with the vascular walk; 2, lumbar disc herniation caused by the protruding disc may compress the nerve, which leads to sciatica, in addition to lumbar pain may also appear lower extremity Radicular pain, so there will be pain symptoms in the thigh; 3, long-term heavy physical labor, overexertion caused by muscle and ligament damage, there may also be symptoms of leg pain. Therefore, this situation should pay attention to rest, avoid strain, and actively carry out symptomatic treatment. If the symptoms cannot be relieved, further examination in hospital is also needed to clarify the cause.