Abstract: Objective To investigate the status of exclusive breastfeeding of 6-month-old infants in Hefei and analyze its influencing factors, so as to provide scientific basis for improving the behavior of exclusive breastfeeding. Methods Singleton live births delivered in the obstetrics department of a hospital in Hefei from January to October 2020 and their mothers were selected as the research object. At the age of 6 months after birth, the contact information of mother / father was obtained through hospital delivery records. The feeding status and influencing factors of 6-month-old infants were investigated. The feeding status of 6-month-old infants was analyzed by descriptive epidemiological analysis method, and the influencing factors of exclusive breastfeeding were analyzed by univariate and multivariate analysis methods. Results A total of 2 537 infants were included in the study. There were 724 cases of exclusive breastfeeding, accounting for 28.54%, 298 cases of dominant breastfeeding, accounting for 11.75%, 356 cases of supplementary feeding, accounting for 14.03%, 819 cases of breastfeeding, accounting for 32.28%, and 340 cases of bottle feeding, accounting for 13.40%.Multivariate Logistic regression analysis showed that the older the infant mother was （OR=0.441）, the depressed / flat nipple of the infant mother （OR=0.360）, and the milk opening time of the infant mother was ≥ 30 min （OR=0.431）, the possibility of exclusive breastfeeding of 6-month-old infants was less. The higher the educational background of the infant's mother （OR=2.499）, the occupation of public institution staff （OR=1.806）, the individual operator （OR=1.730）, the farmer / unemployed （OR=2.018）, and the infant's parents support breastfeeding （OR=2.392）, the possibility of exclusive breastfeeding of 6-month-old infants was higher. Conclusion The rate of exclusive breastfeeding of 6-month-old infants in Hefei is low, and it is affected by many factors such as mother's age, education, occupation, nipple depression/flat, milk opening time and whether father supports breastfeeding. According to the current situation and influencing factors, we should strengthen the education and intervention measures of exclusive breastfeeding to improve the situation of infant breastfeeding in this area.

Key words: Infant, Feeding status, Exclusive breastfeeding, Influencing factor