An electronic and a gate structure including a first door-leaf, a second door-leaf, and a latch are provided. The first door-leaf having three first locking portions is movably assembled to an entrance of an object. The second door-leaf having two second locking portions is movably disposed at the first door-leaf, such that the first door-leaf closes or opens the entrance. The latch having a third locking portion and a fourth locking portion is movably disposed on the first door-leaf and between the first and the second door-leaves. The first locking portions are located on a moving path of the third locking portion. The second door-leaf is locked to the object and the third locking portion is located at the middle one of the three first locking portions, the fourth locking portion is blocked with one second locking portion and the first door-leaf covers the entrance.