Abstract: In order to improve the precision of low range and high precision strain gauge pressure sensors, a new beam-film structure was designed. The structure as an elastic element is made up of a wheel hub beam and a film with a center rigid core. We found the most appropriate structure parameters of the elastic element through finite element analysis and tested these parameters by an experiment on a real object. As a result, we achieved the conclusion that the parameters were appropriate and the performance of the sensor was greatly improved. The precision met the request of high precision measuring in low range. Also, the sensor has simple structure and low cost. These characters matched the trend of sensor technology development.