In view of the factors such as the element pattern and the element direction for an arbitrary airborne radar conformal array, the spatial snapshot and the subarraying are studied, and a general clutter model at the element level is introduced on the basis of the fact that the conformal array spatial matched filter, which is different from that of routine planar array, is provided. Finally, clutters and their distribution of several conformal arrays for airborne radar are simulated and analyzed respectively. The Results validates the feasibility of the clutter model.