Head and neck cancer is prevalent in Taiwan, and oral cancer is the most common location. Patients with advanced stage of the disease need extensive tumor excision with neck dissection. Secondary reconstructive surgeries using free flap could improve the postoperative function or appearance of cancer survivors. Advanced treatments make survival rates increased. Effects of treatment for oral cancer develop shoulder dysfunction, speech, mastication, donor site morbidity and psychological issues. Physical therapy may have benefits for temporomandibular joint function, shoulder pain relief, muscle performance, and oral structures coordination. Return to work in the number of cancer survivors is a realistic outcome. Rehabilitation effects on functional restorations and quality of life for head and neck survivors are needed for further studied.