Vitreous surgery is a more complex surgery in ophthalmology, mainly treating vitreous hemorrhage, retinal detachment, macular diseases and complex ocular trauma, etc. In the past, it was mainly a 20G surgery, generally a three-channel surgery, with a surgical incision of about 0.9 mm, and the surgical incision required absorbable thread for suturing at the end of the surgery. It is inevitable that there are some complications, such as proliferation near the incision and intraoperative sawtooth edge dissection, which are the causes of postoperative retinal detachment and other complications. At the same time, patients usually have prolonged postoperative ocular congestion, and due to suture absorption, there is usually an increase in congestion one month after surgery, and the patient’s postoperative dry eye can last for a considerable period of time. Due to the sutures, postoperative astigmatism may also occur to varying degrees and affect vision recovery. Minimally invasive vitreous surgery solves the above-mentioned disadvantages. Currently, there are two types of vitreous surgery in China, 23G and 25G. 23G incision is about 0.6mm, 25G is about 0.4mm, and generally no sutures are needed after surgery, but since 23G incision is still large, if no sutures are used, postoperative wound leakage often leads to low intraocular pressure, so sutures are often needed. 25G surgery does not require sutures because the incision is smaller, so it has the advantage of being less invasive. It has the advantage of being much less invasive. The 25G procedure is used internationally.