The present invention relates to a system and method for physical and mental health monitoring and services. The system comprises: at least one miniature wearable vital sign signal acquisition device, which acquires and/or calculates at least the following data of a user: heart rate, movement, blood oxygen, and PPG, and sends the acquired and/or calculated data to a user APP in the form of raw data and/or processed data; a user APP, which analyzes the received data; and a data server (300), which is capable of communicating with the user APP to provide data services. According to the present invention, the system guides the user to perform specific tests through the miniature wearable vital sign signal acquisition device and/or the user APP, and performs multi-vital-sign data integrative analysis based on the data acquired and/or calculated during these specific tests through the user APP.