Complex probiotics can not gain weight. The main role of compound probiotics is to balance the body’s intestinal flora stability, eliminate some bad flora, and effectively regulate the intestinal flora environment. Complex probiotics do not belong to the fertilization drugs, and do not have the role of fertilization. If the patient has intestinal flora disorders, you can effectively improve the intestinal flora by eating complex probiotics, which can be beneficial to a certain extent to the digestion and absorption of food, and has a certain auxiliary effect on weight gain. Want to gain weight need to reasonably match the diet, daily intake of moderate or high calorie, eat more high protein, high calorie, carbohydrate, meat type of food. But also reasonable exercise, help to increase muscle content, but also can effectively increase the appetite, help to eat more food. In addition, if patients suffer from hyperthyroidism, anemia, diabetes and other diseases, they need to actively treat the primary disease. Patients who are too thin are advised to go to the hospital in time and gain weight under the guidance of the doctor.