Objective: To probe into the risk factors and countermeasures of Clostridium difficile infection and the diagnosis and treatments. Methods: To analyze the case profile and treatment effect of 1 case with CDI. Results: Through evaluating the children’s condition and the treatment outcome of previous hospitalization

the clinical pharmacist discussed with the clinician to carry out fecal microbiota transplantation for the child and suggested adding probiotics to the child. The clinician adopted the method. After treatment

the child’s symptoms improved. Conclusion: We should not ignore any possibility in evaluating the illness state of children. Clinical pharmacists should participate in clinical practice

exercise clinical thinking and cooperate with clinicians to ensure medication safety for children.