This is a physical problem, but your spleen and stomach are cold. It is normal to eat miscellaneous grains every day. If you don't eat it, you will be constipated, which is caused by deficiency and cold of the spleen and stomach. The problem lies in diet. If you want to change this symptom, you must pay attention to diet. You can't eat cold, cold and greasy food, and you can't eat more vegetables and fruits, so your stool will gradually improve.