To provide a pump control system coping with a failure of a power supply system while increasing redundancy by providing a plurality of electric pumps to a fluid passage.

A pump control system includes a first electric pump P1 and a second electric pump P2 provided to a fluid passage R, first and second rotation speed sensors RS1, RS2 measuring rotation speeds of the first and second electric pumps P1, P2, and first and second voltage sensors VS1, VS2 measuring voltages of electric power supplied to the first and second electric pumps P1, P2, and includes a pump control device 10 which stops the supply of the electric power to the electric pump P in which abnormal conditions are determined when the abnormal conditions of one of the first electric pump P1 and the second electric pump P2 are determined on the basis of measurement results of the sensors, and which lights a yellow lamp 11 and stores history information.