Novel sofa bed

The invention discloses a novel sofa bed comprising a sofa seat. The novel sofa bed is characterized in that the sofa seat connectively sleeves a push-pull box body which can be pulled out of the sofa seat, a sofa board group as same as the sofa seat in length and width is arranged above the sofa seat, a hollow storage cavity is arranged in the push-pull box body, a handle capable of driving the push-pull box body into and out of the sofa eat is arranged on the back face of the push-pull box body, a cover board capable of covering the hollow storage cavity is arranged above the push-pull box body and is rotatably connected with the upper back edge of the push-pull box body through a first hinge, the sofa board group is hinged to a sofa seat edge through a second hinge, a first stop piece is arranged on the inner bottom wall of the sofa seat, a second stop piece matching with the first stop piece is arranged at the front bottom of the push-pull box body, and a supporting seat which is rotatably connected with