The invention relates to the technical field of intelligent locks, in particular to an intelligent lock capable of being installed in a quick left-and right reversing way. The intelligent lock comprises a lock shell, a spring bolt baffle plate, a latch bolt, an engaging and disengaging assembly and an engaging and disengaging drive device. When a connecting end of the latch bolt moves to a telescopic port, the lock can be rotated freely; when a locking end and a limiting section of the latch bolt move to the telescopic port, the lock cannot be rotated; an ejector plate assembly comprises an ejector plate elastic piece and a latch bolt ejector plate; the other end penetrates through a rotary hole formed in a latch bolt pulling point part of the engaging and disengaging assembly; and a fastening end of the latch bolt ejector plate can be separably ejected on a side face of one side, close to the latch bolt pulling point, of a clamping baffle plate. According to the intelligent lock, a quick reversing mechanism is compact in structure, and an opening size of the telescopic port can be reduced as much as possible, so that the lock shell of a lock body cannot be deformed easily; a torsion spring is adopted to press the ejector plate; the latch bolt ejector plate is ejected to the rear end of the latch bolt, so that an action force is smaller, the service life is longer, and a reversing process of the latch bolt is simpler and more convenient to operate; and the intelligent lock can quickly realizes installation and left and right doors.