The utility model discloses a join in marriage muddy structure, including joining in marriage muddy structure body, it is used for treating, and processing material cuts, the melting, joining in marriage muddy structure body and including a screw rod barrel, it is used for sneaking out the journey and providing and implement the space joining in marriage, its characterized in that, the screw rod barrel includes at least one barrel subassembly, and it is used for constituting the screw rod barrel, the barrel subassembly includes: the opened cylinder body and the barrel of remaining silent, be provided with the through -hole on the opened cylinder body, the through -hole is used for treating that processing material drops into join in marriage in the muddy structure, the barrel of remaining silent, it is used for constituting the screw rod barrel, the inside screw rod that is equipped with of screw rod barrel. Through the opened cylinder body with the remain silent collocation installation of barrel, it is right to realize through -hole location's change and length of drum's change, and then the condition different to the feed entrance point demand when satisfying the actual production make it is more diversified that the barrel sets up the form, satisfies the demand of multiple technology production.