In Taiwan, for example, in today's society, the proportion of double-paid families gradually rise. When the children in school age, parents often care about the children school activities and health but unfortunately ignores the details. Listening and accompanying is very important for children who are growing up at a positive level. It is important for a children to have healthy body, mind and spirit. However, existing childcare related systems lacks to provide interaction among teachers, children and parents. In addition, it is also needed for providing parents with the timely information regarding the activities of the child in school. 　　With the ever-changing technology, we look forward to overcoming this situation through the popularity of Internet and smart mobile devices. This thesis presents the design and implementation of the parent-child care system based on the Android platform. The system is divided into three modules, namely, the client service module, the message push module and the background management module. The client service module allows the parents to actively check the activity information by browsing the website of the child school while the message push module system automatically push the important message to the parents using mobile phase as the message presentation device. By using the designed parent-child care system, parents can quickly grasp the status of children in the distal and improve the parent-child relationship.