A dynamic control system and method for adaptive drilling tool face in the well comprises a data acquisition module, a control strategy input module, a drilling model information input module, a many-body dynamics modeling module, an adaptive model correction module, a tool face estimate module, a control rule generation module, an execution module and a danger state determination module. A user inputs a control strategy and a drilling model, the data acquisition module is used for acquiring the drilling condition of a system, the many-body dynamics modeling module is used for establishing a many-body dynamics model based on the drilling model, the adaptive model correction module is used for correcting the many-body dynamics model based on the drilling condition, the tool face estimate module and the control rule generation module are used for calculating and controlling the control rule of an execution mechanism based on the control strategy, the drilling condition and the corrected many-body dynamics model. The danger state determination module can give the alarm when the system is in danger. The dynamic control system and method can be widely used for dynamically controlling the tool face of a power drilling tool in real time during directional drilling in the well.