The invention relates to a method, a device and equipment for acquiring a spatial audio direction vector. The method for acquiring the spatial audio direction vector comprises the following steps of determining a position of a sound source in a multi-sound system; setting parameters comprising a human response time deltat and a tolerance percentage delta; acquiring a sound signal from the sound source; and processing the sound signal by using the parameters and acquiring a corresponding spatial audio direction vector (formula) within each time interval deltat. In practical use, a proportional constant D is determined according to a modulus of a spatial audio direction vector (formula), and provides spatial information of depth for a virtual image corresponding to a multi-tone audio signal; and a vector angle thetaE the spatial audio direction vector (formula) provides spatial information of direction for the virtual image corresponding to the multi-tone audio signal to improve viewing experience of a viewer.