The invention relates to a vertical ladder baby carriage detection and advertisement precise delivery method and system, and the method comprises the steps: S1, detecting whether a vertical ladder isin an operation state or not, and collecting an image in the vertical ladder under the condition that the vertical ladder is detected to be in the operation state; S2, processing the image, and detecting whether a baby carriage exists in the image or not; S3, when it is detected that the baby carriage exists in the image, triggering a mother and baby advertisement putting instruction; and S4, putting mother and infant advertisements in real time according to the mother and infant advertisement putting instruction. The precise advertisement putting method is based on baby carriage detection inthe vertical ladder, when it is detected that a baby carriage exists in the vertical ladder, mother and baby advertisements are played, playing of specific advertisements for specific crowds is achieved, and the advertisement propaganda effect can be better improved.