Left lower abdominal bulging and loose stools refers to left lower abdominal distension, loose and unformed stools, the use of drugs need to be based on the specific causes. If physiological causes usually do not need to use drugs; if pathologic causes can be based on the specific disease selection of corresponding drugs such as norfloxacin, pivoxyl bromide, mesalazine and so on. 1. Physiological causes and treatment: can be seen in irregular diet, stimulating diet and so on. Usually do not need special medication, pay attention to life and diet can be adjusted. 2. Pathological causes and treatment: such as enteritis, we can consider norfloxacin, levofloxacin and other drugs; such as irritable bowel syndrome, we can consider pivivoxyl bromide, ortizinium bromide and other drugs; such as intestinal dysbiosis, we can consider bifidobacterium tetrapartite tablets, lichen bacillus capsules and other probiotics; such as ulcerative colitis, we can consider mesalazine, lauzasulphonyl pyridine and other drugs. For left lower abdominal distension, loose and unformed stools, it is recommended to consult a doctor to clarify the cause before deciding on the specific treatment drugs.