The current aerodynamic noise problems have become more common and prominent. Although Lighthill created a pneumatic acoustics for more than half a century, but because of the complexity of the its equation, so over a long period of time it was unable to realize the accurate calculation of aerodynamic noise. With the maturation of the calculation method for computational fluid dynamics and acoustics, numerical computing is becoming the main tool to solve aerodynamic noise problems. This article, from the basic theory of pneumatic acoustics, the existing three pneumatic noise numerical calculation methods and their applicability were introduced. And through the application examples, their respective advantages and disadvantages and solving process were descibed. This may provide certain reference to the pneumatic noise forecast.