Objective To explore the construction of technical evaluation index system of primary children’s health management services, and to provide reference basis for improving the technical aspects of health management services for children at the grassroots level. Methods By means of literature analysis, policy induction and expert discussion, a preliminary framework and content pool for the evaluation index system of technical assessment for primary children’s health management services were established. The Delphi expert consultation method was then used to determine the content of each index. Results After two rounds of expert consultations, a two-level index system with 2 primary indicators and 5 secondary indicators, two of which had 2 tertiary indicators under each, was constructed. Specific content was assigned to this index system, and corresponding scores were allocated on a percentage basis. The positive coefficient of the experts in the two rounds of consultations were 92% and 100% respectively, and their authority coefficients were both 0.88. The coordination coefficients for the rationality assessment of the index in the two rounds of expert consultation were all between 0 and 1 (P < 0.05). Conclusion The constructed evaluation index system for technical assessment of primary children’s health management services using the improved Delphi method is reasonably effective, and this evaluation index system can provide a reference for the technical assessment of health management services for children at the grassroots level..