In this paper , the 3D laser scanning technology is used to obtain the interior point cloud of museum. And on this basis, 3dS Max is used to establish a 3-dimensional model of the museum to complete texture mapping, baking and so on. Then the model is imported into VRP to develop an interactive virtual museum system. Cultural relics are collected and scaned by using hand-held non-contact 3d laser scanner,and then processed. The true 3-dimensional digital cultural relic model is then established. In order to ensure the efficiency and effectiveness, the LOD algorithm is used to simplify the model. In virtual roaming scene designed by us, user can observe personally on the scene from multiple perspectives, can also watch the cultural relics through the keyboard, mouse and distance trigger. Artificially interactive computer control of virtual scene is realized. System interaction is good, holds strong sense of immersion,multi angle, multi way, multi person autonomous roaming Museum,collection of cultural relics can be observed at close range.