The invention discloses a terminal block and a junction device. The terminal block is used for switching on a connecting copper bar and a wire nose for external connection, and comprises a terminal block body, a wiring part connecting the connecting copper bar with the wire nose and at least on fixing part used for fixing the connecting copper bar and the connecting end face. When a wire is removed, people only need to ta apart the wiring part, the wire nose is made to be separated from the connecting copper bar and the connecting end face, due to the fixing part, the relative positions of theconnecting copper bar and the connecting end face remain unchanged; in the wiring process, people only need to connect the wire nose with the connecting copper bar through the wiring part so as to fix the wire nose and the connecting copper bar onto the connecting end face. By means of the terminal block, the problems that a single-hole terminal block is likely to cause looseness of the copper bar, and the pressing face is poor in contact are solved, and secondary faults are effectively reduced. In addition, in the wiring process, the connecting copper bar and the terminal block do not need to be manually connected again, and the wiring efficiency is improved.