With the development of robot and artificial intelligence

the effective recognition and tracking in the complex background becomes a challenging problem，especially in soccer robots game. This paper presents a novel and efficient target tracking algorithm based on a projection method. The projection method has advantages over others. Due to its reduction of calculation work

it makes image processing efficient

and is easy to the implemented. The competition field is divided into several regions from which a seeded point is extracted to be used as a tracer and is traced into a predicting target region. Then the projection of the tracer is calculated along with the vertical (or horizontal) direction in the target region. Based on the projections

a vertex of the target（center for ball）can be recognized. Finally

the position or orientation of the 7 moved targets can be determined. The performance of the proposed method is assessed in the video tracking system. Experimental results are also shown in a computer simulated system.