A high-precision accelerometer relates to the technical field of acceleration measurement and comprises a servo circuit board, a torquer stator assembly, a pendulum assembly and a shell. The shell isprovided with a cylindrical inner cavity, one end of the inner cavity is closed, and the other end of the inner cavity is opened to form an opening; the torquer stator assembly is located in the innercavity, and the torquer stator assembly and the opening are arranged at intervals to form a hanging meter structure; and the servo circuit board is positioned at the opening and is bonded and weldedwith the shell to seal the inner cavity. The high-precision accelerometer adopts multiple new technologies such as a unique hanging meter structure, a precise flexible supporting structure, a pendulumassembly mechanical structure, a high-sensitivity capacitive sensor and a feedback type integrated servo circuit, so the high-precision accelerometer has the characteristics of high product stability, high repeatability precision, small temperature coefficient, accurate temperature measurement, quick starting, strong environmental adaptability and the like, and is particularly suitable for high-precision systems with high requirements on accelerometer precision, temperature and starting time, such as inertial navigation, navigation attitude, platform stability, missile steering engine controland the like.