To understand the intake of added sugars among primary school students, to analyze the sources and influencing factors of intake, and to propose improvement measures.

A stratified cluster sampling method was used to select 12,603 primary school students in Lianyungang as the research subjects. A food atlas-based questionnaire was used to investigate the intake of foods with added sugars and calculate daily intake of added sugars.

The median added sugar intake of primary school students was 22.1 g/day, 45.7% of students consumed more than 25 g/day, and 21.7% of students consumed more than 50 g/day. Sugar-sweetened beverages, flavored yogurt, pastries and sweets were the four main sources of added sugar intake among primary school students (accounting for 38.3%, 24.0%, 14.1% and 12.1% respectively). Multiple linear regression analysis showed that boys, higher grade, higher BMI, and less sleep were associated with increased intake of added sugars.

The excessive intake of added sugar by primary school students in Lianyungang was quite prominent. On the one hand, nutrition education should be carried out to publicize the harm of excessive intake of added sugar.On the other hand, it isrecommended to include the added sugar content in the nutrition label to guide teenagers to choose healthy food.