Due to the development of science nowadays, femtosecond laser is more and more widely used in myopia laser surgery, and it is also the most commonly used and the most popular type of surgery. All surgeries have risks, and femtosecond laser surgery is no exception, but the risk of femtosecond laser surgery is relatively low, and the following types of surgical risks are commonly seen: 1) undercorrection, i.e., myopia is not completely corrected; 2) overcorrection, i.e., originally myopia has become hyperopia after the surgery; 3) refractive error, i.e., after the surgery has been cured, myopia is slowly appearing again, which is a more common situation; 4) dry eye, more patients with dry eyes before the surgery have the possibility to aggravate the dry eye after the surgery. Dry eye syndrome, many patients who had dry eyes before the surgery may be aggravated after the surgery, if you have these problems, you need to pay attention to check; 5, very rare but serious complications, including corneal infection, corneal dilatation, cone cornea, if these serious complications occur, it can cause irreversible and serious loss of vision in the eyes, but this is a very rare case.