Video mining principally involves 3 levels of operation,namely,video data preprocessing,video feature data extraction,the discovery and representation of video mining pattern.Aiming at theabove manipulations,the current study probe into the researches of video data mining by taking therecognition of body posture and the comprehension of action as the mining tasks.The paper puts for-ward a DBAN basic framework with the notation of planar body part so as to enhance the accuracy ofbody posture positioning and the precision of its action recognition,which has been given testimony tots availability through one empirical research.