Provided is a substrate storing container in which a latching mechanism includes an engagement latch 32, an engagement latch lifting/lowering cam 35 that causes the engagement latch 32 to advance to and retreat from an engagement concave portion and causes the engagement latch 32 in the engagement concave portion to move toward/away from the other end portion of a container main body by advancing and retreating in a direction in which the engagement latch 32 advances and retreats, and a rotating cam 31, and the engagement latch lifting/lowering cam 35 includes an engagement latch connection portion 357 that causes the engagement latch 32 to be engaged with the engagement concave portion and thereafter causes the engagement latch 32 to approach the other end portion of the container main body by moving in a direction in which the engagement latch 32 approaches the engagement concave portion.