A hard bump on the face does not hurt or itch, consider sebaceous cysts or dermatofibromas, etc., according to the needs of the disease, choose whether to open the knife. 1. Sebaceous cysts: sebaceous gland ducts on the face is blocked, resulting in sebum excretion is not smooth formation of cysts, not secondary infection, there will be a bag on the face of a hard bump painless, you can go to the hospital to improve the relevant examination, a clear diagnosis of the surgical excision. 2. Dermatofibroma: Dermatofibroma is a benign tumor caused by tissue proliferation, generally no conscious symptoms, can not be dealt with. If it affects the appearance, it can be treated by surgical excision. It is important to note that when you find a bag on your face, it is recommended to go to the hospital for examination, and then make a treatment plan according to the examination.