Temperature,　stress　birefringence　and　low　frequency　vibration　have　a　negative　impact　on　the　long-term　operation　instability　of　optical　voltage　sensors　(OVS),　resulting　in　large　random　and　fluctuate　errors　in　the　output　signal.　In　order　to　suppress　the　error,　this　paper　developed　a　method　based　on　electrical　field　modulation　with　high-speed　rotating　isomerism　electrodes　and　the　digital　lock-in　amplifier　technology.　This　method　can　shift　the　frequency　band　of　the　measured　signal　to　2kHz,　avoiding　the　low-frequency　(　©　2022　IEEE.