 This paper proposes a new method called rough Z-number MABAC, RZN MABAC. It integrates Pew's convergence-controlled selection, PCS, consistency theory, Z-number, distance measurement and entropy method to rank alternatives and select the best mortise and tenon joint. The proposed method was tested with a real-life case studying compared with other methods. The results showed that the proposed method outperformed other methods in terms of accuracy and efficiency. This article was authored by Bin Shang, Zhechen, Qin Ma and others.