Objective To understand the current situation and possible influencing factors of exposure to electronic devices in preschool children in Tongling city, in order to provide scientific basis for the rational use of electronic devices. Methods A total of 1 914 preschool children from 10 kindergartens in Tongling city were retrospectively investigated by a random cluster sampling method in December 2017.Demographic information, birth history, family status, exposure duration to electronic products, parental attitudes and more were collected.Data were analyzed by the χ² test and Logistic regression model. Results Totally 1 817 valid questionnaires were obtained, of which 981 were boys and 836 were girls.Television (91.7%) was the most common type of preschool children′s electronic devices.81.3% of children used more than two types of electronic devices.The order of using electronic devices was as following:watching animation (86.3%), listening to songs or stories (54.8%), playing games (33.9%) and using learning software (16.8%).Playing games were more common in boys, and listening to songs or stories were more common in girls (P<0.05).Listening to songs or stories, playing games and using learning software among different age groups were significantly different (P<0.05).Logistic regression analysis showed that the risk factors of exposure to electronic devices more than 2 hours in different periods were mother′s literacy level, twins, elder caregivers and father drinking. Conclusions Electronic devices exposure in preschool children in Tongling city is quite prevalent.So participation of the whole society, cooperation between medical staff and educators, and supervision by parents are necessary.Also, factors on gender, age, mother′s literacy level and main caregivers should be considered when relevant intervention methods are made.