The first bowel movement in the morning is normal and the second one is loose, which may be related to unhygienic diet, cold, enteritis, etc. It can be relieved by lifestyle intervention or medication such as montelukast, mesalazine, bifidobacterium triplex tablets. Consumption of cold, spicy and other irritating foods or cold abdomen after morning defecation may lead to a second discharge of loose stool. It can usually be relieved by lifestyle interventions such as eating a light diet and keeping warm. If these methods are ineffective, medications can be taken to intervene, such as antidiarrheal agents like montelukast or probiotic preparations like bifidobacteria. If the condition is recurrent or accompanied by symptoms such as abdominal pain, it may be related to diseases such as chronic enteritis and can be treated with medications such as mesalazine and bifidobacterium triphala tablets. The above drugs are prohibited for those who are allergic to them and should be taken in accordance with medical advice. If the symptoms of diarrhea are serious, or persist without improvement, it is recommended to go to the regular hospital in time, after clarifying the cause of the disease, under the guidance of the doctor for targeted treatment.