The invention provides a shaft tip supporting pendulum type servo accelerometer, which is characterized in that a torquer of a closed-loop servo system is utilized to stabilize detection quality at a balance position, and the acceleration is indirectly measured by measuring the magnitude of current flowing through the torquer. Due to the adoption of a rigid supporting design mode that metal is matched with a conical jewel bearing, compared with a torsion bar open-loop liquid floating pendulum type accelerometer, the threshold value, the resolution ratio and the linearity precision are improved by nearly hundreds of times, and compared with a flexible fine rib supporting quartz accelerometer, the vibration resistance and the impact resistance are improved by nearly 10 times; the device has multiple technologies such as a high-sensitivity capacitive sensor, a single torquer structure and a feedback type high-precision integrated servo circuit; the device product has the characteristics of small size, light weight, low power consumption, large measurement range, vibration resistance, high precision, strong environment resistance and the like, has the advanced technical level in China, and is suitable for being widely applied to the fields of flight control systems, flight parameter systems, autopilot systems and the like.