The invention discloses a controllable-pitch propeller state data storage method and system, and belongs to the field of ship running state monitoring. The method comprises the steps of obtaining controllable-pitch propeller state data, wherein the controllable-pitch propeller state data includes vibration data; storing the controllable-pitch propeller state data; screening the vibration data withthe storage time exceeding a set duration based on a shaft system speed of a controllable-pitch propeller during collection of the vibration data; and deleting the vibration data except the screenedvibration data. According to the method, the controllable-pitch propeller state data is obtained, the vibration data with the storage time exceeding the set duration is screened based on the shaft system speed of the controllable-pitch propeller during the collection of the vibration data, and the vibration data except the screened vibration data is deleted, so that the data amount can be reducedand the long-time low-cost storage of the controllable-pitch propeller historical state data is realized.