The invention discloses traditional Chinese medicine porridge for treating kidney deficiency. A preparation method for the porridge comprises the following steps: weighing the following raw materials: 20g-30g of walnuts, 20g-30g of red jujubes, 15g-20g of medlar, 3 pig kidneys, 40g-50g of polished round-grained rice and the like; washing the pig kidneys, removing fascia, and chopping finely; washing the polished round-grained rice, the walnuts, the red jujubes, the medlar, eucommia ulmoides, fistular onion stalks and gingers; putting into a pot for boiling to form porridge; adding salt and five-spice powder for seasoning when the porridge is about to be cooked. The porridge is eaten for breakfast each day. The porridge is prepared from general pure traditional Chinese medicines, is simple to prepare and low in cost, and can be used for effectively treating patients with kidney deficiency; a test on the patients with kidney deficiency shows that the total treatment efficiency of the patients with kidney deficiency reaches more than 95% and a treatment effect is remarkable.