The invention discloses a diesel generator set fault diagnosis and detection device and method based on deep learning. The device comprises a frame (1), a loudspeaker (2), a displayer (6), a memory (10), a CPU (11) and a data collection device (18), wherein a deep learning module (24), a self-adaptive integrated strategy module (20), a historical signal database (23) and a fault category expert system bank (19) are contained in the frame (1), the self-adaptive integrated strategy module (20) is provided with an integrated strategy generator (201), the fault category expert system bank (19) isprovided with a fault category database (191), a fault index database (192), a fault marking database (193) and a fault level database (194), the deep learning module (24) comprises a clustering algorithm, and a signal transceiver (5) is arranged at the middle position of the upper end of the frame (1). Therefore, it is more accurate and convenient for people to perform fault diagnosis and state online monitoring on a diesel generated set.