Small hard lumps on the right side of the neck may be caused by local infections, enlarged lymph nodes, thyroid tumors and other reasons, and should be treated according to the specific causes, and the treatment methods include medication, anti-tumor therapy, surgical treatment and so on. 1. Local infection: mainly caused by boils, carbuncles, acne infections, etc., which can be treated with antibacterial drugs as prescribed by doctors, such as erythromycin ointment or internal oxfloxacin, cefixime. 2. Enlarged lymph nodes: the common cause is caused by inflammation around the neck or caused by tumor disease, enlarged lymph nodes with local pain are commonly seen in inflammatory enlargement, you can take amoxicillin, cephalexin, penicillin and other anti-infective treatment. Painless lymph node enlargement should be excluded from neoplastic diseases, the primary tumor should be identified or lymph node biopsy should be carried out, and anti-tumor treatment should be actively carried out. 3. Thyroid tumor: with the increase of tumor volume, it can be obviously protruding from the body surface, and a hard mass can be touched on the right side of the neck, with unclear boundary and poor mobility. The nature of the lesion can be clarified through puncture, and radical thyroid tumor + lymph node dissection can be performed as soon as possible, and radiotherapy can be carried out after the operation if necessary. The small hard lump on the right side of the neck may also have other causes, such as lymphatic tuberculosis, etc. It is recommended to go to the hospital in time to consult a specialist doctor to determine the specific causes based on clinical manifestations, auxiliary examinations, etc., and to give targeted treatment or therapy, and blind self-medication should be avoided.