The invention discloses a coarse aggregate angularity tester and an application method of the same. A frame body is provided with a pair of vertical rods, a collection barrel is fixed on the frame body through a cross beam, the cross beam is connected with the vertical rods on the frame body in a sliding manner, the collection barrel is arranged along the vertical direction and is divided into an upper section and a lower section, the upper section is shaped like an isometric cylinder and the lower section is shaped like a conical cylinder, the diameter of the conical cylinder reduces gradually from top to bottom, and an opening part at the lower end of the collection barrel is provided with a valve for controlling the opening and the closing of opening part. The application method of the coarse aggregate angularity tester comprises the following steps of: A. regulating the height of the collection barrel to a proper position, and closing the valve on the collection barrel; B. pouring coarse aggregate into the collection barrel, leveling the surface by pouring, and refusing to disturb or scrape the coarse aggregate to be flat after the pouring; and C. opening the valve, starting a stopwatch simultaneously, stopping the stopwatch when all the coarse aggregate flows out, and reading the flowing time of the coarse aggregate. The tester is simple in structure, simplifies the test steps, and needs short test time and the test result can be quickly obtained.