Gallbladder cancer has not invaded the muscularis propria means that the cancer is confined to the mucous layer of the gallbladder and has not yet invaded other layers of the gallbladder wall, which suggests that the progress of gallbladder cancer is still at an early stage. The gallbladder is divided into the following layers from inside to outside: ① mucous membrane layer: there are many columnar epithelial cells, which play the functions of secretion and absorption. ②Solid layer: mostly connective tissue, rich in elastic fibers, lymph and blood vessels. ③Muscular layer: there are transverse and longitudinal muscles. ④Extracellular membrane: encircling the entire outer wall of the gallbladder, with blood vessels and lymph, etc. It is loose connective tissue, and most of it is plasma membrane layer. Pathological interpretation and further treatment plan of gallbladder cancer should be formulated by specialists and should not be disposed of by oneself.