The goal of this prospective cohort study is to investigate long-term therapeutic strategies for myasthenia gravis (MG) and identify potential biomarkers. The main questions it aims to answer are: 1. Whether low-dose oral steroids may lead to a reduction in the recurrence rate among patients with MG. 2. To identify potential biomarkers that can predict disease progression and prognosis. This study recruits well-controlled patients with MG. Based on patient preferences and considerations such as coexisting conditions (e.g., uncontrolled hypertension, diabetes, severe osteoporosis, obesity), the participants will be non-randomly divided into two groups: a maintenance steroid therapy group and a withdrawal group (withdraw all immunosuppresants). Subsequently, these groups of patients will undergo long-term follow-up assessments.