The causes of heel swelling without pain include poor local venous return, ankle strain and so on. 1. Poor local venous return: If you have been doing strenuous exercise or heavy physical labor for a long time, it can lead to poor venous return. If the symptoms are mild, you can wear compression stockings to increase the local pressure and promote blood circulation to relieve the condition. At the same time, you can also follow the doctor’s instructions, with the use of warfarin, rivaroxaban and other drugs to carry out treatment. 2. Ankle Strain: There are many causes of ankle strain, such as overwork and exposure to cold. If the disease is in the early stage, it may lead to the phenomenon of swollen but not painful heel. For the above cases, patients should take more rest and should not engage in strenuous exercise or heavy physical labor to avoid aggravation of the condition. Heel swelling without pain can also be caused by tendon sheath cysts, hypoproteinemia and other diseases, if the symptoms persist for a long time, you should consult a doctor without delay.