Update publication information. By using the cutting-edge technology of high-resolution LC-MS/MS, we do not only investigate the proteome of breast milk samples but also the glycoproteome. What’s more, the purpose of our research is to investigate the feasibility of breastfeeding of COVID-19 puerperant women which is closer to the clinical demand. Last but not least, we collected in detailed information of puerperant woman as well as their breast milk samples in different stages.