1. A processor-implemented alarm method, comprising: acquiring a monitoring video from camera equipment in communication with a processor; detecting whether the monitoring video contains a moving target; if it is detected that the monitoring video contains the moving target, determining whether the moving target is a preset object; and if the moving target is determined to be the preset object, forbidding sending corresponding alarm information to a terminal, wherein detecting whether the monitoring video contains the moving target comprises: acquiring a pixel value of each pixel in a video image of the monitoring video; determining, based on the pixel value of each pixel in the video image and a preset background model, whether the video image contains foreground pixels, the preset background model being configured to represent a distribution characteristic of a pixel value of each background pixel in the video image on a time domain; and if it is determined that the video image contains the foreground pixels, determining that the monitoring video contains the moving target; and wherein determining whether the moving target is a preset object comprises: in the video image of the monitoring video, cropping an area where the moving target is located to obtain a target image; processing a size of the target image into a preset size; extracting a characteristic vector from the target image according to a preset classification model; calculating probabilities of the target image belonging to multiple types included in the preset classification model, according to the characteristic vector and the preset classification model; determining a type with a maximum probability as a type of the moving target; and when the determined type is a preset type, determining that the moving target is the preset object.