This　paper　introduces　a　single-axis　electrostatic　micro-gyroscope　made　of　a　cantilever　beam　and　a　proof　mass　fixed　at　the　free　end　of　the　beam.　The　proof　mass　is　under　the　coupled　action　of　two　fixed　electrodes,　both　of　which　are　connected　to　DC　voltage　to　produce　larger　static　deformation.　The　electrode　in　the　driving　direction　is　also　subjected　to　AC　voltage,　which　drives　the　proof　mass　to　produce　the　primary　vibration.　Due　to　the　rotation,　a　second-order　vibration　is　generated　by　the　Coriolis　force　in　the　sense　direction　which　is　perpendicular　to　the　primary　vibration.　Therefore,　the　angular　speed　can　be　measured　by　detecting　the　amplitude　of　the　second-order　vibration.　First,　the　governing　equations　of　vibrating　beam　micro-gyroscope　are　deduced　by　Hamilton　principle　and　the　two　transverse　coupled　vibrations　of　the　rotating　cantilever　beam　are　investigated.　Next,　the　influence　of　multiple　parameters　on　the　static　deformation　of　micro-gyroscope　is　analyzed　and　the　first　two　natural　frequencies　of　the　system　are　obtained.　The　effects　of　different　parameters　on　the　natural　frequencies　of　the　system　are　presented,　and　the　dynamic　amplification　effect　and　its　calibration　curve　in　the　drive　and　sense　directions　of　the　system　are　discussed.　©　2020,　Nanjing　Univ.　of　Aeronautics　an　Astronautics.　All　right　reserved.