Whether muscle weakness can walk is related to the cause of its disease and severity of the disease, and cannot be generalized. If myasthenia gravis leads to limb weakness and difficulty in walking, after active treatment, such as immunoglobulin, immunosuppressants and other treatments, the condition improves and the person can walk on his own; if there is no obvious response to the treatment and the condition is poorly controlled, the person will be paralyzed and bedridden. For example, people with muscle weakness due to amyotrophic lateral sclerosis can walk on their own at first, but as the disease progresses, they will eventually become paralyzed and bedridden, which is life-threatening due to the involvement of respiratory muscles. If hypokalemia causes muscle weakness and inability to walk, the condition will improve soon after potassium supplementation is given. For patients with muscle weakness, they should seek prompt medical attention for a clear diagnosis and active treatment, and their prognosis should be assessed on a case-by-case basis, and no generalization should be made.