Hypothyroidism refers to a series of clinical symptoms caused by damage to or weakening of the parenchymal organs of the thyroid gland, resulting in a decrease in the secretion of hormones. In general, this disease is often influenced by dietary habits, irregular diet and low water intake can cause endocrine disorders, which can also cause hypothyroidism. In addition, improper use of medication after the development of hyperthyroidism, or tumor invasion by cancer can also cause this condition. The clinical treatment of hypothyroidism often requires levothyroxine to supplement the body’s basal hormone levels and maintain the body’s basal metabolic rate. If the patient has other co-morbidities, such as hypokalemia, appropriate treatment is required to maintain the basal metabolism.