Cataract surgery is increasingly moving toward the category of refractive surgery, but for some complex cataract cases, how to complete the surgery safely and smoothly and minimize the occurrence of complications is still our concern. The so-called complex cataract surgery is to some extent a relative concept, which is determined by the patient’s own conditions and the operator’s mastery of the surgery. Complex cataract surgery should also combine both the patient and the operator to determine how to respond. The main difficulties that can affect cataract surgery include: pupillary problems, large sclerotomies, anterior chamber problems, corneal problems, and problems with the suspensory ligament of the lens. Accurate operator judgment and proper application of techniques during surgery are key to obtaining good surgical results. In complex cataract surgery, the suspensory ligament problem is the most difficult problem to deal with and the most variable. In some cases, we cannot determine the health of the suspensory ligament preoperatively, and sudden suspensory ligament problems during surgery can affect the surgical outcome to varying degrees if not handled appropriately.