The invention relates to a home indoor monitoring method and system based on images. The method includes the steps that when a figure appears in a camera, soft features of the figure are recorded intoa first soft feature database, and the soft features are updated in real time; meanwhile, facial features of the figure are captured, and comparison detection is conducted with a face database; if the face detection succeeds, figure reminding is conducted; if the face detection fails or no facial feature of the figure is captured, the soft features in the first soft feature database and a secondsoft feature database are adopted for comparison detection; if the soft feature detection succeeds, figure reminding is conducted; if the soft feature detection fails, alarm reminding is conducted; ifno figure appears in the camera within a first set period of time, the first soft feature database is cleaned, wherein the soft features include at least one of clothes shape, clothes color, ornamentshape, ornament position, ornament color, hair color and height.