A method and device for implementing end-to-end Hardware Message Passing (HMP) are disclosed. The device includes: a message memory, a controller, a message input interface and a message output interface. The message memory is configured to temporarily store a message. The controller is configured to perform management on a message in the form of hardware, store a message obtained from the message input interface into the message memory, and read a message from the message memory and transmit the message to a message user via the message output interface. The message input interface is directly connected with a message creator and is configured to obtain a message created by the message creator under the control of the controller. The message output interface is directly connected to the message and is configured to provide a message to the message user under the control of the controller. The disclosure can improve the efficiency of message passing and reduce software management overhead.