You don't need to cancel, you can make a new appointment, and then remember to go to the designated hospital for physical examination at the appointed time. The health certificate physical examination is stipulated by the local physical examination, and you can also help others. The physical examination of health certificate is carried out in the epidemic prevention station of CDC or community health service center, but if the general company sometimes does not specify the physical examination place, it can directly report to me. As long as the medical examination is qualified, it means that the medical examiner has passed.