The incidence of thyroid cancer has increased rapidly in recent years, especially in women. Early differentiated thyroid cancer has a good prognosis, and surgery is the main treatment. Traditional open surgery would leave a scar on the neck. However, emerging minimally invasive procedures can avoid the scar on the neck, resulting in better aesthetic effect, which would have an impact on the quality of life of patients to a certain degree. This study intend to follow up patients regularly with early differentiated thyroid cancer undergoing different surgery. The quality of life, voice, scar would be assessed by authoritative questionaires or scales. We hope to demonstrate that minimally invasive surgery is better than traditional open surgery in order to provide reliable evidence for clinical practice.