The invention relates to protocol conversion equipment and a protocol conversion method based on a TSN framework. The protocol conversion equipment comprises a physical hardware layer, a data link layer and a function application layer, the physical hardware layer is used for receiving data to be subjected to protocol conversion; the data link layer is provided with a time sensitive network, and the time sensitive network analyzes the data to be subjected to protocol conversion received by the physical hardware layer and sends the analyzed data to be subjected to protocol conversion to the function application layer according to a set priority sequence based on the data type; the function application layer performs protocol conversion according to a set priority sequence and sends the converted data according to the set priority sequence; wherein the higher the time sensitivity of the data to be subjected to protocol conversion is, the higher the priority is; wherein the data with highpriority is sent first, and the data with low priority is sent later. Queuing and waiting of the time key data are avoided, the transmission time of the time key data is effectively shortened, and the distributed energy regulation and control requirements can be met.