A method, a server, and a system for sharing resource data are provided. The method includes: preconfiguring a resource configuration file, reading a preset key value and an index name in the resource configuration file; requesting a memory space from an operating system according to the preset key value to create a shared memory; and loading resource data corresponding to the index name from a magnetic disk to the shared memory, and sharing the resource data with a process of each scene server on a same physical machine.