The utility model discloses a rubber tube physical property test clamping tool for an engine. The rubber tube physical property test clamping tool for the engine comprises a starting end, a closed end and a locking mechanism. A first conic face where one end of the rubber tube for the engine is embedded is arranged on the outer surface of one end of the starting end and the other end of the starting end is provided with a starting connector matched with a liquid discharging end of a tester; a second conic face where the other end of the rubber tube for the engine is embedded is arranged on the other outer face of one end of the closed end and the other end of the closed end is provided with a closed connector matched with the closed end of the tester; the locking mechanism comprises fixing boards, connecting boards, lock bolts and lock nuts. The number of the fixing boards is two, a conic hole is formed in the middle of each fixing board, the number of the connecting boards is two, the two connecting boards are fixed to the middle of the starting end and the middle of the closed end respectively, and the lock bolts and the lock nuts drive the two fixing boards to move to clamp the two ends of the rubber tube for the engine. The rubber tube physical property test clamping tool for the engine can firmly clamp the rubber tube to be tested; when a test is conducted, the rubber tube is prevented from sliding down and the reliability of the test is guaranteed.