A method and apparatus for generating a user avatar, an electronic device, and a computer readable storage medium are provided. The method may include: receiving incoming expression-driven information and a target avatar model being sent when a rate at which an original rendering device renders to obtain a corresponding dynamic avatar is less than a preset rate; driving the target avatar model based on the expression-driven information to generate a dynamic avatar of the user; and pushing the dynamic avatar as a substitute avatar of the user to another user.