The invention provides a respiratory training device convenient to measure abdominal pressure, which comprises an abdominal belt, a hanging belt, an abdominal pressure measuring mechanism, a supporting mechanism, a warning mechanism and a respiratory training mechanism, the abdominal pressure measuring mechanism is mounted on the upper side of the abdominal belt, the hanging belt is movably mounted on the front side of the abdominal pressure measuring mechanism, the hanging belt is movably connected with the supporting mechanism, and the supporting mechanism is movably connected with the warning mechanism. Compared with the prior art, the device has the following beneficial effects that the abdominal pressure measuring mechanism is arranged and is matched with the abdominal belt and the hanging belt, so that pressure generated by belly bulging during respiratory training of a trainee is conveniently measured; and through the design of the warning mechanism, the trainee can be prompted whether the current breathing mode is correct or not conveniently, so that the trainee can use the correct breathing mode to conduct breathing training, and the breathing training effect is improved.