Snap-in junction box

The invention discloses a snap-in junction box. The snap-in junction box comprises a box body, a box cover and a wiring terminal block, wherein the two ends of the box body are provided with a wire inlet and a wire outlet respectively; a side wall of the wiring terminal block is provided with at least two pairs of wire inlet and outlet holes; wire locking structures are arranged above the wiring terminal block; a front inner vertical wall and a back inner vertical wall of the box body are provided with wiring terminal block guide grooves respectively; a front outer wall and a back outer wall of the wiring terminal block are provided with guide columns capable of sliding into and out of the box body along corresponding wiring terminal block guide grooves respectively; and two transverse tap positions are arranged in the wiring terminal block guide grooves to partition the wiring terminal block guide grooves into open grooves, wiring grooves and bottom grooves. When wires are to be connected or disconnected, th