Efficient membrane repair after injury is essential for cell and animal survival. epidermal cell hpy7 has emerged as a powerful genetic system to investigate the molecular mechanism of membrane repair . This protocol describes detailed approaches for how to perform wounding on the epidermis and how to examine membrane repair by trypan blue staining, confocal imaging, and data analysis. For details on the use and execution of this protocol, please refer to Meng et al. (2020).