If the inner thigh rubs when walking, it is the following factors: 1, the most common factor is obesity, in the patient is overly obese, the inner thigh is commonly known as the root of the thigh, there will be an excessive amount of fat layer sequelae and fat layer aggregation, so the inner side produces friction when walking. 2, when the thigh muscles are particularly developed, such as biceps femoris, triceps femoris, quadriceps femoris excessively thick, will also be in the walking When the inner thighs produce friction occurs. In the pelvic diseases, knee, hip joint when different diseases, such as rheumatic diseases, rheumatoid arthritis, inflammation of the pelvis, knee meniscus injury, synovitis, and even tenosynovitis, will also occur when walking, the inner thigh friction situation.