This study explores the rites of Holy Week, liturgical and custom related to Holy Week. This issue is extremely important when we give consideration the development of the custom for the rites of Holy Week. The variety and richness of customs emphasize how Easter is important for Christian faithful. The Author wants to point out that folk tradition and customs aim to show the fundamental truth of the Christian faith. This study is to help the faithful understand more deeply the legal and liturgical sense of customs of Holy Week.