Abstract: To retrieval directly information with images, by using the face detection technique based on the gravity-center template matching method and the face recognition technique based on methods of the principal component analysis and the linear discriminative analysis. To the given video sequence, the system can retrieve face image from big face image database on time. Experimental results show that the system is provided with good human-machine interface, high retrieval rate, short retrieval time and can well satisfy the user's requirements.