Abstract: According to Karl Marx，culture proper is a kind of practical belief morphology that unifies belief activities and practical activities. As the entire social life is material productive activity in nature，both the power of belief in cultural morphology and its practical form are the natural products of material production，i. e.，a reflection of the subjective-objective relationship in material productive activities. Thus，cultural morphology has the fundamental attribute of organically unifying belief and practicality. The dialectical correlative mechanism（rule）of belief activity and practical activity determines the operation and development of cultural morphology. Under the influence of this basic mechanism，the inevitable tendency of cultural morphological development is the gradual formation of diversity-based general cultural morphology that is open to the world.

Key words: Marxism, cultural morphology, belief, practicality