Sensitivity and impact resistance are contradictory.Taking low-range

high-sensitivity butterfly micro accelerometer as object

and theoretical analysis and test research on its anti-drop performance are carried out.The basic structure and working principle of the butterfly micro accelerometer are introduced.The stress of the sensitive structure under static load is simulated and analyzed

the dynamic model for the sensitive structure in drop condition is established

and the static force and drop impact tests are carried out.Theoretical analysis and test results show that the initial velocity in the drop impact is the main reason causes structural damage.