Contents: Chapters: 1 - Belief & belief of ancestral worship of Vietnamese people in Red River Delta. Concepts. Concrete contents. 2 - The belief of ancestral worship of Vietnamese people in Red River Delta - a view from philosophical angle. The concepts on Universe and human life of Vietnamese people in Red River Delta regarding ancestral worship. 3 - Activity of ancestral worship of Vietnamese people in Red River Delta at present. Real current situation. The Party political stance. Trends & solutions. Conclusion.