According to the vibration-absorbing problems in YSZ-50 audio frequency vibration drilling rig, by the analysis on the characteristics of vibration-absorbing schemes for dynamic head of audio frequency both in China and abroad, 3 composite vibration-absorbing schemes were put forward: (1) with metal rubber shock pad in vertical pin to absorb most part of vibration energy in vibrator, and this was the main vibration-absorbing means; (2) with side composite rubber block to absorb most vibration energy from vibrator to the box; (3) with traditional rubber pad to absorb vibration energy from the box back to the rotary motor. It was proved by tests that these composite vibration absorbing schemes can effectively absorb the vibration of dynamic head of YSZ-50 drilling rig.