The requirements of the array layout is given to solve the problem of the effect of antenna layout to the farfield power combining gain in antenna uplink arraying,including the minimum distance between elements,the compactness,flexibility,scalability and economical of layout. The layout of smallscale array(3~36 array elements) is analyzed, and of the highest power gain of different array element is designed.Then,using computer simulate lunardistance farfield power gain of different layouts,the gain value is compared and summed up some rules.The simulation results show that the optimal layout is consistent with theoretical analysis. considering the scalability of arraying scale, reference layout of 16 and 36 array elements is given.