Eat lactulose not defecate, total exhaust, often because the drug dose is insufficient, constipation is serious, indigestion caused, it is recommended that patients according to their own reasons for reasonable treatment, generally can obtain satisfactory results. Common causes and treatment methods 1, drug dose is not enough: because the drug dose is small, resulting in a slow effect, so no defecation, but the appearance of exhaust, indicating that gastrointestinal motility has begun to increase, there is no need to worry too much at this time, may soon be able to defecate, but also under the guidance of the doctor by increasing the amount of drugs to strengthen the effect of drugs; 2, constipation is heavy: lactulose alone can not relieve the symptoms, at this time can be combined with other performance, to determine Whether it is necessary to cooperate with other drugs for treatment, such as polyethylene glycol, linaclotide, pro-dynamic drugs, etc.. At the same time, attention should be paid to the regulation of diet, you can eat more vegetables and fruits and drink more honey water. If necessary, you can also appropriately add drugs to promote gastrointestinal power co-treatment, to develop the habit of regular bowel movements, which is conducive to avoid and alleviate the occurrence of constipation; 3, indigestion: after eating lactulose did not play a role in defecation, always appear exhaust, may be caused by indigestion. This situation can be under the guidance of doctors, the use of drugs to promote digestion for treatment, such as bifidobacterium, bifidobacterium trituberculosis, etc., to play the role of laxative. Caution in daily life should pay attention to avoid eating indigestible food, avoid eating spicy, stimulating food, so as not to increase the burden on the stomach and intestines. Drink more water appropriately to lubricate the intestinal tract.