A folding and unfolding structure for an electric folding bed, comprising two vertical endboards (1), two outer bed frames (2), two inner bed frames (3), two electric pressure rods (4) and a bolt (5) the two outer bed frames (2) are mutually pivoted to form a bed surface (21) the two vertical endboards (1) are respectively pivoted at the two ends of the bed surface (21), forming a structure that the bottoms of the vertical endboards (1) are in supporting contact with the ground and the two outer bed frames (2) span between the two vertical endboards (1) the two outer bed frames (2) can also be pivoted upwards relative to the vertical endboards (1) with the mutual pivot position of the two outer bed frames (2) as a central point, so that the two vertical endboards (1) are then adjacent to each other the inner bed frames (3) are disposed in the outer bed frames (2), and are pivotably combined with the outer bed frames (2) at the end away from the vertical endboards (1) the electric pressure rods (4) are disposed under the inner bed frames (3), are pivoted on the vertical endboards (1) at one end, and are pivoted on the inner bed frames (3) at the other end the inner bed frames (3) and the outer bed frames (2) are respectively provided with a pin hole (22, 32) at the side for inserting the bolt (5) the inner bed frames (3) are fixed by the bolt (5) and the electric pressure rods (4) drive the inner bed frames (3) to mutually fold the outer bed frames (2) and the vertical endboards (1).Linvention concerne une structure pliante et dépliante pour un lit pliant électrique, comprenant deux hayons verticaux (1), deux cadres de lit extérieurs (2), deux cadres de lit intérieurs (3), deux tiges de pression électrique (4) et un boulon (5) les deux cadres de lit extérieurs (2) sont pivotés mutuellement pour former une surface de lit (21) les deux hayons verticaux (1) sont pivotés respectivement aux deux extrémités de la surface de lit (21), formant une structure où les parties in
