Disclosed in the present invention are a medical imaging system and method based on virtual reality technique and capable of carrying out interactive and three-dimensional dynamic real-time rendering. The medical imaging system, including a local medical imaging device, a server and a terminal medical imaging device, can realize dynamic real time rendering, and realize more real, steric and intuitive the imaging effect. Based on the system and method, the doctor can realize positioning zoom, rotation, “entering”, moving up and down, change in color and transparency in a particular area and the like of three-dimensional imaging to realize the interactive display of three-dimensional image.