The utility model discloses a simulator capable of simulating an asphalt pavement track under a longitudinal slope condition. The simulator is characterized by comprising two large parts of a track tester and a test mold, wherein a motor of the track tester is a variable frequency motor; the rotating speed of the motor is controlled by a transducer, so as to control the walking speed of a test wheel, so that the walking speed of the test wheel can be arbitrarily adjusted within a range of 10-60 per min (one way). The test mold comprises a slope cushion block (15), a test mold base plate (17) and a test mold side wall (18) from bottom to top. According to the simulator, control of the walking speed of the test wheel is achieved by controlling the rotating speed of the variable frequency motor by the transducer; a longitudinal slope of a path can be simulated by adopting the track test mold with the slope cushion block; the size of the longitudinal slope can be adjusted by changing a slope angle alpha of the slope cushion block; meanwhile, the effects of the vehicle speed and the longitudinal slope on the track can be simulated; the simulator more accords with the action mode of wheel load under the longitudinal slope condition in practice; the generated track test result more accords with the actual condition.