It is necessary to treat the symptoms according to the cause of the small bumps on the body without pain or itching, usually using medication, physical therapy methods, common causes include keratosis pilaris, flat warts and so on. 1. Keratosis Pilaris: Keratosis Pilaris may be related to heredity, lack of vitamins, endocrine factors, etc. It occurs on the outer side of the upper arm, the anterior side of the thighs, and also in the face and buttocks, and is manifested as a normal skin color or reddish pimples on the surface of the skin, and there are no self-conscious symptoms. The actual topical use of retinoic acid ointment, tazarotene gel, etc., inflammatory reaction is more serious, can be combined with the topical use of glucocorticoid ointment, such as mometasone furoate cream, prednisone acetate cream, etc., and at the same time, oral vitamin A, vitamin E to improve the symptoms. 2. flat warts: flat warts is due to the HPV infection caused by viral skin disease, good in the face, the back of the hands and forearms and other parts of the manifestation of the skin surface appeared slightly elevated flat papules, usually no other discomfort symptoms. It can be localized as topical salicylic acid cream, Vitamin A acid ointment, etc. Physical therapy can also be used, such as liquid nitrogen cryotherapy, laser therapy, etc.. All of the above drugs have adverse reactions and are recommended to be used under the guidance of a professional doctor. Small bumps on the body without pain and itch may also have other causes, it is recommended to go to the hospital in a timely manner to improve the examination, to clarify the cause of the disease to give targeted treatment.