Secure data exchange method, device and equipment among different networks

The invention provides (a) secure data exchange method, device and equipment among different networks, suitable for the technical field of computer network security. The method comprises the following steps that a shared storage space of a first virtual machine and a second virtual machine is distributed in a host machine; a first communication channel, of non-IP protocols, between the host machine and the first virtual machine is configured, and a second communication channel, of non-IP protocols, between the host machine and the second virtual machine is configured; and data exchange between the first virtual machine and the second virtual machine is carried out in the shared storage space via the first and second communication channels. The shared storage space between the two virtual machines which are connected to different networks is configured by the host machine, so that data exchange can be automatically carried out in the non-IP protocol communication channels among the networks, the security of data exchange among the networks is improved, and the cost is reduced.