Abstract: The multi-parameter surface testing instrument of producing well and station was developed according to the problems that some wells with instability gas content and gaging technology of measuring station now is more difficulty. Field testing indicate that using this instrument can matriculate flow, water cut, well temperature and inflow station pressure at the same time. The surface receiver can acquisition parameter automatism and can show flow, water cut, pressure and temperature on screen. The technology can lighten labor intensity of workers and improve labor efficiency. It has a better economic benefit and society benefit.