According to the communication security risk between smart meter and various client devices, this paper introduces a security design scheme of smart meter communication. This design classifies the clients by device type, designs the hierarchical authentication mechanism and data object access control to ensure the security of data access. According to contrast analysis, the standard encryption algorithm (AES-128-GCM) that suitable for the protection of the smart meter data transmission is selected, combining with the data transmission security scheme design, to ensure the security and interoperability of smart meter communication. The scheme has some reference significance for the security of the smart meter data communication and the access of the subsequent extended client device.