Duck poop is clinically called loose stool, i.e., loose and unshaped stool. If patients have duck poop for a month, it may be caused by gastrointestinal digestive dysfunction, resulting in indigestion or gastrointestinal tumors, resulting in extrusion of stools. 1. Gastrointestinal digestive dysfunction: if the patient suffers from gastritis, gastrointestinal irritable syndrome, peptic ulcer and other diseases, resulting in decreased peristalsis of the gastrointestinal tract, digestive dysfunction, the patient’s stool is prone to long-lasting duck shit stools, at this time, you can take drugs such as domperidone, omeprazole enteric-coated tablets, etc, to improve the function of the gastrointestinal tract and alleviate the symptoms. 2. Gastrointestinal tumors: patients with gastrointestinal tumors, firstly, digestion and absorption dysfunction, stool is not shaped, and secondly, due to the intestinal tumors on the fecal matter extrusion, impede the absorption, stool is easy to form duck poop. The symptoms of duck poop for one month may also be caused by other diseases. It is recommended that patients go to the hospital as soon as possible to find out the cause of the disease and then treat it under the guidance of the doctor, and the medication should be administered under the guidance of the doctor, and should not be used privately.