A new sparse aperture configuration composed by nine sub-apertures is proposed.The pupil function of the new configuration is given and the characteristic of its pupil function is analyzed.The simulation of the new configuration with different fill factors is done by computer.The characteristics of the modulation transfer function (MTF) and the changes of the equivalent diameter are analyzed.The new configuration has a large and uniform coverage in the frequency field.By comparing the new configuration with the Tri-Arms configuration,the result shows that:the new configuration is better than the Tri-Arms configuration in the equivalent diameter and the uniformity of the MTF.The new configuration has advantages in remote imaging.