The utility model relates to a storage box. The storage box comprises a box body and a grid basket, a first storage cavity is formed in the box body and defined by a box body base plate and box body lateral plates, and an opening is formed in the top; a second storage cavity is formed in the grid basket and defined by a grid basket base plate and grid basket lateral plates, and an opening is formed in the top. The storage box is characterized in that the grid basket is placed at the top of the box body in a stacked mode, and one side of the grid basket is hinged to the box body through a hinge unit. The grid basket can be overturned around the hinge unit to expose out the first storage cavity when being opened, the bottom of the grid basket is embedded into the first storage cavity or located above the first storage cavity, the storage space can be enlarged, and the using convenience can be increased.