A nwe type platform based on laser is introduced in the paper.The light platform can balance automatically in the certain range by the technology of gravitation pendulum.The platform can beam the light and form the horizontal light datum plane and the vertical light datum plane,which are orthogonal each other.With the horizontal rolling framework and the bracket,the horizontal light datum plane can be moved up and down and right and left freely and the characters of output light signal can be kept at the same time.