With the rapid development of virtual reality (VR) technology,various applications emerge.However,the current applications can not make full use of the advantages of VR,and are mostly limited to fixed-point static panoramic display and tour.Therefore,this paper proposes a bird like flight interactive simulation system which integrates VR technology and 3D reconstruction algorithm.The system builds a hardware control platform with stable structure to change the actual posture,and at the same time the bird flight in the virtual environment is simulated by software,thus a deep flight simulation combined hardware driving and software simulation is realized.Most of the existing virtual environments are constructed by artificial modeling,laser scanning or unmanned aerial vehicle (UAV) aerial photography.The artificial modeling is time-consuming and laborious,the laser scanner can not adapt to large-scale reconstruction,and the UAV needs professional training.This paper introduces the patch based multi-view stereopesis (PMVS) algorithm based on image clustering,which can automatically restore the three-dimensional structure. By inputting a specific set of images,the algorithm can reconstruct any scene quickly.Users can experience to fly around the world without leaving home,which provides a new possibility for tourism and VR industry.