The influence on magnetic road caused by temperature is researched.The temperature influence includes environment temperature changing and heating caused by force balance accelerometer（FBA） selfwork.Simulation calculating is proposed aimed at these two reasons.The results show

when environment temperature transforming

feedback magnetic road structure is changed

this variety causes magnetic parameter drift;heating effect of feedback current induces the deformation of up and down feedback magnetic road

this deformation is unsymmetrical

unsymmetry is another reason for output drift.Theory basis for design of low temperature coefficient FBA is proposed.