The invention discloses a target crowd circling method and device and computer equipment, and belongs to the technical field of the Internet. The method comprises the steps of obtaining user real-timebehavior data, analyzing the user real-time behavior data to obtain user real-time label data, and generating a user real-time label bitmap according to a preset bitmap data structure; generating a user total label bitmap database according to the user real-time label bitmap and a pre-constructed user historical label bitmap database, and constructing difference point data; performing bitwise operation on the difference point data and a corresponding crowd condition bitmap in a preset crowd condition bitmap library, and determining a bit position of which a bit value in the crowd condition bitmap is a preset value according to an operation result; and determining a condition tree pre-mapped by the bit position with the bit value being the preset value in a preset condition forest library,and circling a target crowd based on the condition tree and the user total label bitmap database. According to the embodiment of the invention, crowd packets meeting conditions can be circled and selected efficiently in real time.