The most common clinical causes of a hard lump on the foot are lipoma, fibroma, sebaceous cysts on the dorsum of the foot, or tendon sheath cysts caused by long-term strain on the musculotendinous membranes, and all of the above diseases can cause a hard lump to appear in any part of the foot. In order to diagnose this hard lump, the first thing to do is to do the ultrasound exploration of the lump, through the ultrasound exploration of whether it is cystic or solid, basically can determine the nature of the lump, the treatment of the way is generally based on the different parts of the body or the size of the lump, to take a different way to deal with it. For the relatively small does not affect the dysfunction of the lump, can be temporarily symptomatic observation, for the location of the deeper or longer is relatively large lump, we must carry out surgery, after the operation to do routine pathology is benign, there is no special postoperative medication and treatment problems.