With the coming of new century, we have to face an inevitable issue, namely, what the most essential and imperative question in the field of contemporary Marxist philosophy study is. As to the issue, where can we find the essential way out of the Marxist philosophy? Should we persist in traditional metaphysics to build a system of absolute truth, or should we persist in materialist dialectics to recognize and solve major realistic social issues? The above issues must be addressed in the study of Marxist philosophy nowadays. The correct answer to these questions is very important to the accurate understanding and grasping of Marxist philosophy. The correct answer can make clear of the place and role of materialist dialectics in Marxist philosophy, of the essential difference between materialist dialectics and traditional metaphysics, and of great significance to the persisting in and developing of Marxist philosophy, and especially to our practice of reform and opening-up. With the coming of new century, we have to face an inevitable issue, namely, the the most essential and imperative question in the field of contemporary Marxist philosophy study is. As to the issue, where can we find the essential way out of the Marxist philosophy? Should we persist in traditional metaphysics to build a system of absolute truth, or should we persist in materialist dialectics to recognize and solve major realistic social issues? The above issues must be addressed in the study of Marxist philosophy nowadays. The correct answer to these questions is very important to the accurate understanding and grasping of Marxist philosophy. The Correct answer can make clear of the place and role of materialist dialectics in Marxist philosophy, of the essential difference between materialist dialectics and traditional metaphysics, and of great significance to the persisting in and developing of Marxist philosophy, and especially to our practice of reform and opening-up.