Ethernet terminal sending achieving method based on shared storage and terminal device

The invention discloses an Ethernet terminal sending achieving method based on shared storage. The method includes the steps that data to be sent are written into a shared storage area, a storage address and a data length are written into a writing pointer buffering area, and the terminal data are sent through querying the content of the writing pointer buffering area. According to the data package sending process specified by a protocol, the terminal sending achieving method based on shared storage is designed. While the terminal sending performance specified by the ARINC664 protocol is ensured, utilization of storage space can be greatly reduced through sharing of storage resources, the design area is reduced, power consumption is lowered, and the resources are saved.