High myopia causing retinal detachment only requires regular follow-up observation if it is stable and not progressive; if the detachment is severe, retinal photocoagulation is feasible, and retinal detachment requires surgical restoration. For high myopia, most of them have abnormal growth of the eye axis, and when the eye axis grows, the retina is stretched and thinned, thus retinal splitting occurs. When the phenomenon of retinal thinning and splitting is found through OCT and other auxiliary examinations, first of all, attention should be paid to observation and regular follow-up observation should be made to see if the retina is in a stable state if it is not very serious. If the retinal split is serious, the retina is extremely thin and there is a risk of retinal detachment, laser blockade can be performed to avoid the continuous progress of the split or retinal detachment; if retinal detachment has already occurred, surgery is needed to reset the retina. It is recommended that highly myopic people should pay attention to eye use and myopia prevention and control, and should consult a doctor in time when retinal disease occurs, and regularly review and improve OCT and other auxiliary examinations to determine the progress of the disease and timely treatment.