The utility model discloses a cultivating box which is suitable for planting edible mushroom indoors. The cultivating box comprises a box body adopting a cuboid structure, a box door arranged at the top of the box body, a draining table arranged at the bottom of the box body, and a support frame, wherein the box body comprises two pairs of side walls arranged in parallel, transparent regions are respectively arranged on the first pair of side walls, ventilation regions are respectively arranged on the second pairs of side walls, and a draining pipe is arranged at the bottom of one side wall; the draining table is gathered together towards the middle of the box body along the bottom edge of the box body and extends upwards to form a tower-shaped platform of which the longitudinal cross-section is trapezoidal, and the top of the draining table is a bearing plate which is parallel to the box door; the support frame comprises four support columns and rectangular support frames, one pair to many pairs of grooves for fixing edible mushroom sticks or mushroom bags are formed in the first opposite sides in parallel to the second pair of side walls, and both ends of each of the four support columns are respectively connected to four peaks of each support frame and four peaks of the opposite bearing plate. The cultivating box disclosed by the utility model is simple in structure, convenient to use, and can adequately satisfy the conditions required by the growth of the edible mushroom.