Aiming at the security monitoring problem of general aviation flight activities， a reasonable automatic dependent surveillance-broadcast （ADS-B） ground station location planning can improve the airspace surveillance scope. This paper proposes a surveillance signal coverage analysis method of the true height and its location analysis of ADS-B ground station based on grid division. First， considering the influence of earth curvature and terrain shading on the signal propagation distance， we establish the geographic model by the digital elevation model（DEM）， and divide the airspace into grids. Second， the grid coverage is calculated by the Xdraw algorithm， and the maximum theoretical coverage of ADS-B ground station at the true height is determined. Third， the maximum coverage model of the ground station is constructed for spatial planning and layout. Finally， the signal coverage of ADS-B ground station is simulated as Hubei Province is taken as an example. The layout of ground stations that meet the coverage requirements of this area is calculated. The results demonstrate that the proposed method can provide a foundation the layout planning of ground stations in practice.