The invention belongs to the technical field of smart home, and discloses a home elder posture detection method and system, a storage medium, equipment and application, and the method comprises the steps that an image collection module carries out the collection of the home environment data of the elder, and carries out the publishing and processing of the collected data; a human body skeletonization module obtains a human body 3d skeleton diagram through feature extraction, key point detection, PAF detection, key point connection, conversion of skeleton coordinate points into 3D points and rotation of the 3D skeleton points based on the acquired image; a posture recognition module performs human body posture recognition through feature extraction and posture matching; a UI module displays a human body 3D skeleton diagram and a human body posture recognition result; and meanwhile, alarm reminding is performed. According to the home elder posture recognition system based on the depth image, family members or medical staff can see the current posture of the elder, the system can prompt the posture of the elder, the workload of the medical staff can be well reduced, and the medical staff can take care of the elder more conveniently.