Objective: To investigate the clinical value of promoting standardized diagnosis and treatment techniques for childhood diarrhea in county medical communities. Methods: In January 2022, the “standardized diagnosis and treatment of diarrhea in children” was implemented in the pediatric department of the county medical community. We selected 100 children with diarrhea, categorizing them into the control and experimental groups for the first 6 months and 6 months after implementation, respectively. We compared the rate of doctors’ mastery of standardized diarrheal disease treatment before and after training, the rate of children receiving standardized diarrhea treatment before and after training, the time to symptoms normalization in both groups, treatment cost, and parental satisfaction. Results: After training, physicians achieved a mastery rate of 97.5% in the standardized diarrhea treatment, significantly higher than the 83.75% before training. The rate of children receiving standardized treatment increased to 94% after training, significantly higher than the 79% rate before training. In the experimental group, the time to normalization of diarrhea, vomiting, dehydration, and fever was (2.4±0.7) days, (2.2±0.7) days, (2.3±0.7) days, and (2.2±0.7) days, respectively. These times were significantly shorter than those in the control group, which were (2.6±0.7) days, (2.4±0.7) days, (2.6±0.6) days, and (2.4±0.7) days. The differences were statistically significant (t-values = 4.321, 2.22, 4.264, 2.895, P < 0.05, respectively). The treatment cost for the children in the experimental group was less (CNY 75.8±6.6) than that of the control group (CNY 96.1±12.5), and the difference was statistically significant (t-value 16.141, P < 0.01). The satisfaction rate of the families of the children in the experimental group was 97.00%, significantly higher than the 85.00% satisfaction rate in the control group (χ2=11.234, P = 0.004). Conclusion: Promoting standardized diagnosis and treatment technologies for childhood diarrheal within county medical communities has clinical value, improving efficacy in children while reducing treatment costs and increasing parental satisfaction.