Abstract:Abstract: OBJECTIVE To screen Learning Disorder (LD) among primary school students in Nanjing, and to provide reference for its prevention and intervention. METHODS Stratified random cluster sampling was used to randomly select one class from grades 1~6 every year in 6 primary schools (2 schools each in Xuanwu District,Jianye District and Pukou District) in Nanjing from Septem⁃ ber 2020 to April 2021. Teachers filled in The Pupil Rating Scale(PRS) Revised-Screening for Learning Disabilities for investigation and analysis. RESULTS Among the 886 primary school students, 110 children with suspected LD were screened, and the LD screen⁃ ing rate was 12.4%. The total LD screening rate of boys was higher than that of girls (χ 2 =14.539,P<0.05). The highest screening rate was 8.1% for mixed LD,1.6% for verbal LD and 2.7% for non-verbal LD. There was significant difference in the screening rate between male and female patients with non-verbal LD and mixed LD (χ 2 =8.573,7.573,P<0.05). The highest LD screening rate was 14.9% in grade One and 8.3% in grade six. The screening rate of children aged 6~9 years old (12.5%) was similar to that of children aged 10~13 years old (12.3%). Among LD children,there was also statistical significance in the composition of LD sub⁃ types between the 6~9 years old group and the 10~13 years old group,but there was no significant difference in gender composi⁃ tion. CONCLUSION LD screening rate is high in primary school students in Nanjing city, and boys and mixed LD are common. The LD screening rate of boys did not decrease significantly with the increase of grade, while that of girls decreased with the increase of grade. Society, schools and families should attach great importance to it.