Objective: We planned to finish the census of 479,402 student in 422 primary school in Dongguang, Guangdong Province, in order to screen the pectus excavatum patient and treat with surgery. Then we could build up an effective stable pectus excavatum screening network to prepare for the Children Pectus Excavatum Diagnosis & Treatment Guildline. Methods: We finished the census 479,402 student in 422 primary school to screen the pectus excavatum patients, then applied the chi-square test to describe the difference in gender. Moreover, we trained 420 school medical practitioners to build up the PEX screening and following network in Dongguang, Guangdong Province. Results: We had screening 477,627 student (N=477,627) in 406 primary schools in Dongguan, Guangdong Province with 99.62% screening rate, age ranged from 4~15 years old, average age was 8.78 years old. Male student was 244,545 (N1=244,545, M1=8.78) with average age was 8.22 years old while female was 233082 (N2=233,082, M2=8.22) with 8.89 years old. A total of 257 children were enrolled the PEX group, the prevalence rate was 0.583‰ with 176 male (N3=176, M3=8.79) while 81 female (N4=81, M4=8.77). The chisquare test result in P<0.00, indicated the prevalence rate in male and female was significantly different. The stable effective PEX screening and following network was initially built up by 410 school medical practitioners were trained with three courses and passed the exam. Conclusion: The research screened the pectus excavatum patients in all the primary school students from 2012~2013 in Dongguan, Guangdong Province. Through the screening and training, a stable effective PEX screening and following network was initially built up, through which the PEX patient in Dongguan could be benefit from early diagnosis, early prevention and early treatment.