Portable experimental box capable of being expanded into experimental bench

The invention belongs to the field of experimental equipment, and in particular relates to a portable experimental box capable of being expanded into an experimental bench. The experimental box comprises a cover body, a box body which is provided with an opening in the top and a liner which is arranged in the box body, wherein the front sidewall, the left sidewall and the right sidewall of the boxbody are movably connected to a base body via hinges; the rear sidewall of the box body is integrally connected to the base plate; and the front sidewall, the left sidewall and the right sidewall canbe expanded until locating within a same plane with the base plate. When the box body is kept under the state of a storage box, various experimental equipment can be integrated so as to facilitate storage and arrangement and to facilitate experimental use, and the experimental box is convenient to carry along and is stronger in adaptability; and when the box body is kept under the state of the experimental bench, the fron