The invention discloses an axisymmetric silicon micromechanical gyroscope sensitive structure and a manufacturing method thereof, wherein the sensitive structure comprises an elastic frame with bonding anchor points on both sides, an axisymmetric through-hole region is arranged on the elastic frame and 'H'-shaped supporting beams are arranged on the symmetric axis of the axisymmetric through-holeregion, two axisymmetric sensitive mass blocks are arranged on each of two sides of each 'H'-shaped supporting beam, and are arranged in the through-hole region, and one side of each sensitive mass block is connected with the corresponding 'H'-shaped supporting beam through a coupling beam; the manufacturing method comprises the step of using a wet-dry combination method to prepare the sensitive structure on a single silicon wafer. The axisymmetric silicon micromechanical gyroscope sensitive structure disclosed by the invention realizes complete axisymmetric distribution, reduces the loss, decreases the stress concentration, lowers the motion coupling, and improves the mechanical sensitivity; the manufacturing method disclosed by the invention has the advantages of simple processing technology, high processing quality, high structural robustness, high stability, wide application range and the like.