Power unit structure for hybrid vehicle

To provide desired shaft torque to a drive wheel without increasing the number of parts or increasing the size of a motor, to improve cooling capability of a generator housed inside a transmission case, and to improve energy transmission efficiency and electrical generation efficiency in an engine unit of a hybrid vehicle. A power unit structure for a hybrid vehicle is provided with an engine (20), a continuously variable transmission (23), a driven shaft (60), a drive motor (21b) and a reduction gear mechanism (69). The drive motor (21b) is attached to the reduction gear mechanism (69).