During optical designing, ghost images of optical system should be avoided, so fast and precise analysis of ghost images appears to be very important. The way of first-order ghost-image analysis of imaging system based on Code V and Tracepro is proposed. The surfaces which can cause serious ghost image are found out. The optical system model is established in Tracepro. The image is separated into several parts. Different parts are setted as different spot sources, then, the spot sources are analyzed one by one. During analysis, the order of the ghost is controlled by threshold and ghost-surface is controlled by the surface property. Through analysis, the position of ghost image, and power distribution of ghost image can be obtained.