A constant volume bomb device with an adjustable inclination angle test platform; a hydraulic means is fixedly connected in the constant volume bomb of the adjustable inclination angle test platform control system; a temperature-control system is respectively connected with a computer and a relay of a heater in the constant volume bomb; a fuel supply system is respectively connected with the computer and a fuel injector in the constant volume bomb; a backpressure control system is respectively connected with the computer and a control pressure valve in the constant volume bomb; a high speed dynamic analyzer and an adjustable inclination angle test platform control system two-step motor are respectively connected with the computer; the height and angle can be continuously adjusted; the constant volume bomb device can deeply study a spray hit-wall distance and a hit-wall angle, a single oil drop roll angle and contact angle, and a near-wall surface area gas mixture formation influence mechanism, thus providing guarantees for testing accuracy and measuring parametric diversity; the constant volume bomb device is simple in structure and easy to realize.