In our study, women had a low intention to breastfeed, and the reasons included lack of time to breastfeed due to long work hours, and difficulty breastfeeding due to clean-room and shift work. In the workplace in this study, the working mother often worked more than the legally mandated 8 hours (83.3%), and 46.7% needed to take shifts and thus bear a heavy work burden. Our data revealed that working mothers with shift work had lower prevalence to use the breast pumping breaks than non-shift workers (27.2% vs. 44.0%, p