An electronic device is provided. The electronic device includes a first casing, a second casing, and at least one latching assembly. The second casing defines a through hole. Each latching assembly includes an operating member, a latching block, and at least one positioning member. The operating member includes a first plate and a second plate secured to the first plate. The first plate extends through the through hole, the second plate is external to the through hole. The latching block protrudes from the first casing. When the second plate is driven to move from the first position to the second position, the first plate engages the latching block and the positioning member to secure the second casing to the first casing. When the second casing is driven to move from the second position to the first position, the first plate disengages from the latching block and the positioning member.