The main symptoms of hypothyroidism include swelling of the limbs, loss of spirit, slow reaction, mental retardation, thinning and dry hair, swelling of both lower limbs, weight gain, fear of cold, and soreness of the waist and knees. TCM diagnosis belongs to spleen and kidney yang deficiency. Treatment is to benefit qi and strengthen the spleen, warm the kidney and help the yang. Chinese medicines include Gui Fu Di Huang Wan, Yu Gui Wan, Jin Gui Kidney Qi Pill, Jian Zi Li Zhong Wan, Bai Ling Capsule, Sen Ling Bai Zhu San, Ginseng Qui Spleen Pill, Ginseng Jian Spleen Pill, Jin Shui Bao Tablet, Ji Sheng Kidney Qi Pill, and so on. It needs to be combined with western medicine levothyroxine tablets for better effect. Pay attention to high nutrition, high vitamin, easy to digest food, and eat more food with high iodine content.