The invention discloses a video call data optimization method, a mobile terminal and a readable storage medium. The method comprises steps of: when a first terminal detects a call instruction of conducting a video call with a second terminal, collecting, by a camera of the first terminal, original video call data corresponding to a first user in the video call; shielding other pictures except a first user portrait profile in each call image corresponding to the original video call data, so as to obtain first video call data; sending the first video call data to the second terminal, so as to enable a second user of the second terminal to perform a video call with the first user through the first video call data. Through adoption of the method, other pictures except the first user portrait profile in the video call data are shielded in the video call, so that the video call data sent to the second user does not carry a background image of a current position of the first user, privacy ofthe video call user is protected, and use ratio of video call is improved.