Abstract: In order to study the electromagnetic stealth characteristics of aircrafts, a meshless time-domain algorithm based on computational fluid dynamics (CFD) was proposed. Based on the meshless point cloud structure, the spatial derivatives related to the algorithm were approximated by using an expanded Taylor series combined with the least square technique in each cloud of points, and a Steger-Warming flux vector splitting approach was introduced from CFD for computing the physical flux of spatial discretization. After that, an explicit four-stage Runge-Kutta scheme was employed to develop the time discretization of the equations. Finally, the electromagnetic scattering field and the bistatic radar cross section of the electromagnetic wave irradiating the aircraft model with different directions were studied based on the algorithm. The results show that the calculated bistatic radar cross section for a 2D cylinder is in good agreement with that of the series solution; the electromagnetic stealth characteristics of the aircraft model is related to the superposition of scattering fields and its shape; the aircraft model example also shows that the algorithm presented has the ability to accommodate complicated situations with multielement or multi-component to a certain extent.