Posterior retinal detachment is one of the complications of retinal laser photocoagulation, which usually occurs when the laser is not operated properly or when the eye condition is poor, but modern medicine has made this technique clinically mature, and the above complications rarely occur. Retinal laser photocoagulation, as a common treatment for retinal vascular diseases as well as peripheral detachment and detachment diseases, usually utilizes the laser effect to produce a biochemical reaction that creates a scar in the locally diseased retina, reduces the burden on the remaining retina, or protects the retinal photoreceptor cells from being damaged. When the retinal photocoagulation is improperly implemented or the vitreous body absorbs the laser traction strip contraction, it can cause retinal tear or detachment enlargement, vitreous blood accumulation, choroidal rupture and other complications, therefore, the doctor must be for the patient to carry out a detailed examination before the surgery, clear patients with the indications of doing the surgery, in order to be surgical treatment, the operation is strictly operated. It is recommended to choose a regular, authoritative hospital for retinal laser photocoagulation, relatively safe and reliable, once the retinal detachment, need to implement timely surgical treatment.