The systematics of cyclophyllidean cestodes proposed by Skryabin currently is supplemented by 7 new families and 9 subfamilies. New taxa of family and subfamily level are distributed in the structures of seven suborders of cyclophyllides. For each suborder of cyclophyllides, characteristical morphological features are distinguished, which allows to disseminate species diversity of this most diverse group of tapeworms (more than 1500 species) among seven suborders, which is valuable and facilitates the determination of helminthological material. The main goal of this study is to establish a modern taxonomic structure of the cestodes belonging to the order Cyclophyllidea and identify the most stable morphological criteria which are valuable for the diagnosis suborders. Determine the hostal features forming of the cestodes’ fauna of suborders. As the result, the modern taxonomic classification of the cestodes belonging to the order Cyclophyllidea was proposed. They were distributed between 7 suborders with indications of families and subfamilies in the structure of each suborder. Generally, 25 families and 25 subfamilies are recognized as members of the Cyclophyllidea order.