Related to the field of security protection, a video surveillance method, apparatus, and system, which can implement local magnification of a moving object in a surveillance scene. The method includes obtaining, by a client, an intelligent analysis alarm and moving track information of at least one alarm triggering object, and adjusting a window layout of a user interface according to the intelligent analysis alarm, where the intelligent analysis alarm is triggered by the client, a surveillance platform, or a camera when determining that there is an intrusion object in a surveillance scene according to an intelligent analysis strategy; and performing, by the client, local magnification on the at least one alarm triggering object according to moving track information of the at least one alarm triggering object. The present disclosure is applicable to video surveillance of important places.