In general the thighs are thinner than the calves, and thighs and calves as thick is not normal, the symptoms may be caused by the body is too fat, thigh muscle atrophy, calf myofasciitis. 1. Body overweight: when the body is too obese, no exercise or sports will lead to a large amount of fat accumulation in the soft tissues of the body, thus causing the phenomenon that the thighs and calves are equally thick. 2. Thigh muscle atrophy: If the thigh muscles are pulled or hit by external forces, it will lead to muscle damage on the side of the thighs, so that the local muscle blood circulation is insufficient, malnutrition, which will cause muscle atrophy of the thighs, resulting in the thighs and calves are equally thick. 3. Calf Fasciitis: Excessive exercise on the calf will lead to aseptic inflammation of the muscle, fascia and other tissues of the calf, causing local swelling, hyperplasia and other changes, while making the calf become as thick as the thigh. If there is a situation where the calves are as thick as the thighs, then it is recommended to go to the hospital in order to clarify the specific cause of the disease.