A foldable box comprising: a left panel, a right panel, a front frame, a rear frame, a bottom panel, and a top cover; wherein the left panel and the right panel are formed by connecting two or more sideboards in a vertical direction through a first rotatable connector; the bottom panel has a rotatable connection end and a movable end; the rotatable connection end is rotatably connected to a lower part of the front frame or a lower part of the rear frame through a second rotatable connector; a bottom surface of the movable end abuts against the lower part of the rear frame or the lower part of the front frame; an inner side of a first end of the front frame or the rear frame is provided with a first vertical edge strip and an inner side of a second end of the front frame or the rear frame is provided with a second vertical edge strip; the length of the first and second vertical edge strips along a lengthwise extending direction of the left panel is equal to or more than the thickness of the bottom panel; an end of the left panel and an end of the right panel are connected to the respective first and second vertical edge strips through third rotatable connectors; another end of the left panel and another end of the right panel are correspondingly connected to the rear frame or the front frame by a rotatable connector; the top cover is connected to an upper part of an outer wall of the front frame or the rear frame through a 360-degree rotational connector; the left panel and the right panel are both formed by connecting two sideboards through a hinge, wherein the lower part of the rear frame or the front frame is provided with a support bar, wherein a bottom surface of the bottom panel is horizontally supported by the support bar on a top surface of the support bar, and wherein each bottom part of two sideboards respectively located in the left side and right side near the support bar is provided with a space avoiding groove that is matched with the support bar; wherein the top cover can be turned downward by firstly turning the top cover upward to be in an upright state, and then turning the top cover downward by 180 degrees to abut against an outer side wall of the front frame or the rear frame; wherein the bottom panel can be turned upward to abut against an inner wall of the front frame or the rear frame; and wherein the sideboards of the left panel and the right panel can be sequentially folded to make the front frame and the rear frame move toward each other so as to fold the box. a left panel, a right panel, a front frame, a rear frame, a bottom panel, and a top cover; wherein the left panel and the right panel are formed by connecting two or more sideboards in a vertical direction through a first rotatable connector; the bottom panel has a rotatable connection end and a movable end; the rotatable connection end is rotatably connected to a lower part of the front frame or a lower part of the rear frame through a second rotatable connector; a bottom surface of the movable end abuts against the lower part of the rear frame or the lower part of the front frame; an inner side of a first end of the front frame or the rear frame is provided with a first vertical edge strip and an inner side of a second end of the front frame or the rear frame is provided with a second vertical edge strip; the length of the first and second vertical edge strips along a lengthwise extending direction of the left panel is equal to or more than the thickness of the bottom panel; an end of the left panel and an end of the right panel are connected to the respective first and second vertical edge strips through third rotatable connectors; another end of the left panel and another end of the right panel are correspondingly connected to the rear frame or the front frame by a rotatable connector; the top cover is connected to an upper part of an outer wall of the front frame or the rear frame through a 360-degree rotational connector; the left panel and the right panel are both formed by connecting two sideboards through a hinge, wherein the lower part of the rear frame or the front frame is provided with a support bar, wherein a bottom surface of the bottom panel is horizontally supported by the support bar on a top surface of the support bar, and wherein each bottom part of two sideboards respectively located in the left side and right side near the support bar is provided with a space avoiding groove that is matched with the support bar; wherein the top cover can be turned downward by firstly turning the top cover upward to be in an upright state, and then turning the top cover downward by 180 degrees to abut against an outer side wall of the front frame or the rear frame; wherein the bottom panel can be turned upward to abut against an inner wall of the front frame or the rear frame; and wherein the sideboards of the left panel and the right panel can be sequentially folded to make the front frame and the rear frame move toward each other so as to fold the box.