This paper investigates test study of vehicle test rig with electric control and hydrostatic drive (ECHD). The test rig is built up based on the hydrostatic transmission and measurement & control components are the virtual instruments, PXI and labview. At the starting point, this study considers the speed control of the hydrostatic transmission using a revised fuzzy logic law to find the optimal solution for displacement varying of hydraulic variable Pump/Motor assuming a static speed as target speed. And based on the revised fuzzy logic, the typical driving cycle is employed to verify its process control effectiveness. The test results provided by the revised fuzzy logic test demonstrates the effectiveness in speed control of the ECHD vehicle.