Laryngeal muscle weakness is defined as a weak voice, vocal leakage, singing out of tune, inability to sustain speech, and hoarseness if one speaks more than one word; examination reveals shortening of the vocal time, narrowing of the vocal range, and weakness of the vocal folds with bilateral retraction and incomplete closure. It is mostly seen in people with old age, kidney failure and overworked voice, mostly due to lack of vital energy and strain on the laryngeal muscle, unlike myasthenia gravis or neuropathetic diseases. Vocal fold closure insufficiency is a disease in which laryngeal muscle weakness causes insufficient movement of the vocal folds during vocalization, and is also a disease of laryngeal muscle weakness and vocal fatigue. Patients with laryngeal muscle weakness should pay attention to the following points. 1, eat more protein-rich food; 2, eat more food with vitamins; 3, eat more food with more fiber; 4, eat more mushroom food.