The tendons on the legs are obvious depending on the specific situation. If the tendons on the legs are obvious but not tortuous for people who have been engaged in physical labor or sports for a long time, it is a normal physiological phenomenon, because the blood demand of the muscles increases, so the blood supply of the arteries increases and the corresponding return flow increases, so the veins on the surface appear to be dilated, this situation does not require treatment and does not need to be concerned. However, if the said tendons are very obvious and accompanied by earthworm-like tortuous masses, then it suggests varicose veins, which need to be seen by vascular surgery and ultrasound examination of the lower extremities, and if the situation allows, surgery or conservative treatment, such as the use of elastic medical duties, oral medication such as Avalanche or Mizarin.