The adopted answer upstairs is clearly entrusted by a private hospital! I don't know when and where LZ was operated on. Generally, it is only necessary to remove most of the foreskin, and it is not necessary to completely remove it. Theoretically, it can be redone, but as long as it is not an operation failure or an obvious problem, there is no need to redo it. The so-called failure, to be honest, foreskin surgery is the simplest operation, which is usually used by students to practice their hands. There's really nothing to fail without failing. If he can't do this well, he can't graduate from medical school at all. The removal of the inner plate is generally to prevent edema and desensitization, and the outer plate is generally not completely removed.