Debris flow will cause ground vibration during movement. Based on the law of electromagnetic induction, a velocity-type acoustic wave sensor for measuring ground vibrations induced by debris flow has been designed and developed. The sensor comprises 9 cores, arranged in both series and parallel configurations. It features X, Y, Z tri-axial signal measurement ports, enabling simultaneous measurement of ground vibrations in both horizontal and vertical planes, with a resolution of 240 mV/m/s. Experiments, including static, walking, and knocking tests, were conducted indoors to validate the sensor's operational performance. Additionally, a field deployment of the sensor was conducted in Nyingchi, Tibet, successfully capturing extensive debris flow ground vibration data. The results indicate that the newly developed velocity-type acoustic wave sensor is effective for measuring ground vibrations during debris flow events, offering a viable approach for monitoring and early warning of debris flow disasters.