Utilizing the characteristics of the special instrument of testing the chamber pressure—the electronic Piezo Gauge. Taking the electronic Piezo Gauge’s yend cover as the elastic sensitive component. a novel strain electronic Piezo Gauge is developed. In this paper, Theoretical analysis has been made about mechanical characteristics of the electronic Piezo Gauge shell. The simulation of stress, strain distribution and model of the elastic sensitive components has been conducted through finite elements software ANSYS. Meanwhile test experiments were carried out, and the experiment result prove that the electronic strain Piezo Gauge has good linearity and stability.