The present invention provides a method and device for determining the direction of arrival of a satellite digital wave beam antenna. The method comprises the following steps: using a Beidou/GPS terminal to obtain the position coordinates of a signal source and a digital wave beam antenna in the earth's core geodetic coordinate system; converting the position coordinates of the signal source and the digital wave beam antenna in the earth's core geodetic coordinate system to the position coordinates in the earth's core space rectangular coordinate system; converting the position vectors in the earth's core space rectangular coordinate system to the position vectors in the station core horizontal coordinate system; converting the position vectors to the angle of the direction of arrival in the station core horizontal coordinate system; using a theodolite to obtain the angle of pitch and the azimuth angle of the wave beam antenna relative to the station core horizontal coordinate system; and obtaining the angle estimation error of a digital wave beam antenna DOA module to determine whether the estimation of the angle of the digital wave beam antenna DOA (angle) module is accurate or not. The method and device for determining the direction of arrival of the satellite digital wave beam antenna realize the rapid and accurately determined direction of arrival of the satellite digital wave beam antenna at the out-field condition so as to improve the validity and the flexibility of the test.