1.Benign disease of gallbladder 2.Patients are young 3.Patients have clear requirements for gallbladder preservation 4.Good gallbladder contraction function 5.No obvious abnormalities in gallbladder structure 6.Gallbladder function can still be recovered after biliary surgery 7.Patients whose gallbladder function cannot be recovered after biliary surgery and whose primary gallbladder disease can easily recur are not suitable for biliary surgery