The present invention discloses an object usage scenario extraction method and device. The method includes: obtaining a first object usage scenario of a target class, wherein the first object usage scenario is a sequence of N functions called by a first sequence; determining a first parent class according to the target class, wherein the first parent class is the parent class of the target class; determining L functions from the N functions, wherein the L functions are the functions of the first parent class, wherein N=>L>1; arranging the L functions according to the first sequence to generate a second object usage scenario of the first parent class, wherein the second object usage scenario is a inheritance subobject of the first object usage scenario. The method and device provided by the present invention are used to solve the technical problem that when component contracts are mined, the quantity of object usage scenarios is inadequate, and achieve the technical effect that function call sequences of a mass of object usage scenarios can be obtained by running a small number of application programs.