Liquid cooling server and fault diagnosis method and device and protection method and device thereof

The invention provides a liquid cooling server fault diagnosis method and device, a protection method and device after liquid cooling server fault diagnosis, a liquid cooling server, a computer readable storage medium and a computer program product. The liquid cooling server fault diagnosis method comprises the steps of obtaining an actual temperature value of the liquid cooling server; generatingan actual temperature curve of the liquid cooling server according to the plurality of actual temperature values; comparing the actual temperature curve with a pre-stored reference temperature curvewhen the liquid cooling server operates in a fault state; and if the actual temperature curve is matched with the reference temperature curve, determining that the liquid cooling server fails. According to the fault diagnosis method for the liquid cooling server, the reference temperature curve of the fault of the liquid cooling server is pre-stored, and the fault of the liquid cooling server is diagnosed when the actual t