The utility model discloses a multi-source distribution acquisition device applied to a water-turbine generator set. The system comprises a front-end distributed data acquisition device and a rear-endbus type data recording device which are connected through an optical fiber repeater and a relay CPU. Wherein the front-end distributed data acquisition device, the optical fiber repeater, the relayCPU and the rear-end bus type data recording device are connected in sequence, the front-end distributed data acquisition device comprises a sensor and an acquisition card which are electrically connected, and the sensor is installed on the water-turbine generator set. The device has the advantages of high anti-electromagnetic interference capability, low power consumption, multiple precision (12-24 bits), power saving and reliability, can be widely applied to stability, electrical characteristics and energy characteristics research of mixed flow type, axial flow type, tubular and impact typewater turbine generator sets and pumped storage sets, and can also be extensively applied to various pump station sets.