High voltage electric pulse rock drilling is recognized internationally as a rock breaking method with broad development prospect in deep hole drilling， but research has rarely been done on it in China. This paper describes the design and manufacture of a high voltage electric pulse rock breaking test device， including servo electric cylinder， control cabinet， rock container and other components. The test device is equipped with electric pulse drill bits with diameters of 60mm and 100mm. Manual or automatic downpressure discharge can be used to break rock. At discharge voltage of 120kV and discharge frequency of 1Hz， drilling experiment was carried out in red sandstone and other rocks， and drilling was realized at 60mm diameter. The experimental results show that the device can meet the requirements of electric pulse rock breaking test， and can be used for laboratory research on electric pulse rock breaking.