The embodiment of the invention provides a caching method and system for a VR video. The method comprises the steps of determining a to-be-cached view angle of a VR video based on a received view angle request of a user terminal; if it is judged that the cloud and the base station do not store the to-be-cached visual angle, judging whether to directly cache the to-be-cached visual angle or updatea cache according to the cloud cache allowance and the base station cache allowance; and if it is judged that the to-be-cached visual angle is updated and cached, updating and caching the to-be-cachedvisual angle based on the visual angle request and a maximum and minimum distance algorithm. The embodiment of the invention provides a method and system. According to the embodiment of the invention, the cached view angle at the next moment can be determined according to the view angle number and the view angle request of the VR video, so that the maximum distance sum of the adjacent view anglesof the same segment in the same video after cache updating is minimum, the cache hit rate can be effectively improved and the time delay can be effectively reduced on the premise of the same cache capacity and the same bandwidth, and the user experience is improved.