sma is spinal muscular atrophy, which is mainly characterized by progressive muscle weakness and myasthenia gravis, and can be classified into type 0~4. Type 1.0: It is prenatal onset, with severe muscle weakness at birth, accompanied by bilateral facial paralysis, multiple joint contractures, and congenital heart defects. Type 2.1: Also known as the infantile type, the onset of the disease usually occurs within 6 months after birth and is characterized by a rapid onset of symmetrical loss of muscle strength, disappearance of tendon reflexes, muffled cries, progressive respiratory failure, severe thoracic deformity, and “frog legs” when lying down. 3.2 Type 2: Also known as the intermediate type, which usually develops at 3 to 15 months of age. The manifestations include inability to sit and stand unaided, muscle weakness that is more severe in the lower limbs, atrophy of the lingual muscles with fluttering of the muscle bundles, dysphagia, respiratory insufficiency, and progressive scoliosis. 4.3 Type 3: Also known as adolescent type, it mostly develops between 18 months and adulthood. The patient can walk independently, but the muscle weakness is progressive, with the lower limbs being heavier than the upper limbs, which may lead to severe impairment of daily life and gradual reliance on a wheelchair. 5.4 Type 4: Also known as late-onset type, it has the mildest clinical symptoms and most often develops after the age of 30. People with this type have mild symptoms of muscle weakness and atrophy, and can maintain their ability to walk throughout their life without any impact on their life expectancy. People with these symptoms are advised to seek prompt medical attention and active treatment.