The right side of submandibular pain may be caused by temporomandibular joint disorder syndrome, wisdom tooth pericoronitis, lymph node inflammation. 1. Temporomandibular Joint Disorder Syndrome (TMJDS): When the temporomandibular joints are moving, there is popping sound, there is pain when opening and closing the mouth, and there is pain when pressing the joints with the hand, it proves that it is accompanied by temporomandibular joint arthritis, which can be treated with physical therapy such as hot compresses. 2. Wisdom tooth pericoronitis: if there are wisdom teeth growing, it will cause gum inflammation and pain, and at the same time, it will be painful to press the right side of the jaw, observe whether there is gum swelling and pain in the mouth to make a clear diagnosis. 3. Inflammation of lymph nodes: Pharyngeal and oral infections can lead to inflammation of the right submandibular lymph nodes, which is mainly manifested as swelling and pain of lymph nodes, and the primary disease should be actively treated. It is recommended to go to the hospital in time to clarify the cause of the disease, and for the cause of the treatment.