Wet gangrene is compared to dry gangrene and is thought to occur in internal organs that are connected to the outside world, such as the large and small intestines, the uterus, and the lungs, as well as on the surface of the skin and in the extremities, with bruising and edema. The surface of wet gangrene can appear dark green or black. Due to the decomposition of proteins by spoilage bacteria, the production of obvious fecal odor caused by malodor, wet gangrene occurs, due to the rapid development of the lesion inflammation is more diffuse, so the necrotic tissue and healthy tissue, there is no obvious line of demarcation, while the toxic products of tissue necrosis and corruption, as well as bacterial toxins are absorbed, can cause systemic symptoms of poisoning, and even toxic shock and death.