The utility model relates to a falling sphere tester. A falling sphere tester includes: a pedestal. The protection casing, the protection casing cover is located the base, the falling sphere track, the falling sphere track is located in the protection casing, the falling sphere track has the ball mouth that can supply the falling sphere to break away from, test support piece is used for placing the test piece, the test support piece locate in the protection casing, just the test support piece be located go out the below of ball mouth, the falling sphere track inclines towards the direction of gravity. Above -mentioned falling sphere tester sets up the protection casing on the base, if the test piece breaks in test procedure, can prevent that the test piece from causing danger to the operator, and falling sphere tester inclines towards the direction of gravity through fall ball support spare and first test support piece for the falling sphere can drop under the action of gravity, and structural design is simple, and is easy and simple to handle.