Pediatric steatorrhea, also known as pediatric fat malabsorption, is a diarrhea that occurs when fat is not absorbed in the small intestine for various reasons. Typical steatorrhea stools are light-colored, voluminous, greasy or foamy, often floating on the surface of water, and often have a foul odor. When steatorrhea occurs, the baby’s appetite decreases, he or she is in poor spirits and loses weight. If not treated and cared for properly, prolonged steatorrhea can also cause impairment in the absorption of some fat-soluble vitamins and other nutrients required by the body, leading to a series of serious problems. Find out the cause of your baby’s steatorrhea and treat it symptomatically. If the pancreas is not functional enough, pancreatic enzyme tablets can be given. In addition to treating the original disease, it is advisable to add medium-chain triglycerides to the diet to improve the nutritional status of the patient, as medium-chain fats do not need to pass through the action of bile salts and can be absorbed directly by the small intestine. For fatty diarrhea caused by malnutrition, intravenous nutrition can be used first, and after the situation improves, the diet should be gradually increased, and celiac disease should be restricted to wheat foods. Some fat malabsorption is related to bacterial action, such as bacterial overgrowth in the upper part of the small intestine, which can cause bile salt decomposition, thus affecting fat absorption. Appropriate antibiotic therapy is required.