A wafer container includes a container body and a door joined with opening of the container body for protecting wafers therein. At least one latch component is disposed in the door, and each latch component includes an oval cam and a pair of moving bars, a first end of each moving bar connecting to one of the two opposite sides of the oval cam and a second end of each moving bar having a guiding structure, a pair of moving grooves being disposed between the first end and the second end of each moving bar, at least a pair of rollers being disposed on the door and each roller being embedded in each moving groove of moving bar, and a locating spring being formed as an integral part of the moving bars.