The invention belongs to the technical field of direct access type meters and particularly relates to a direct access type three-dimensional metering electric energy meter, wherein the direct access type three-dimensional metering electric energy meter is simple in structure, convenient in installation and high in work efficiency. Meanwhile, the covered compensation problem of electricity charges can be effectively solved by the direct access type three-dimensional metering electric energy meter. According to the technical scheme of the invention, the direct access type three-dimensional metering electric energy meter comprises a meter tail, a primary sampling module and a secondary measurement and control module. The meter tail is provided with first and fourth holes used for being connected with the power inlet wires of a power grid, second and fifth holes used for being connected with the house-service electrical wires of users, and third and sixth holes used for being connected with the outlet wires of a power generation system. The primary sampling module comprises a voltage and current unidirectional sampler and a voltage and current bidirectional sampler. The secondary measurement and control module comprises an MCU microcontroller, an electrical energy special metering circuit, a liquid crystal display screen and an MCU built-in memory. The direct access type three-dimensional metering electric energy meter is applicable to electric power departments.