The invention provides a folding screen window and a folding screen door, which are provided with an upper guide rail 1, a lower guide rail 2, a folding screen 3, movable mullions 4 and 5, and rope trains 6 and 7. The two sides of the folding screen are connected with the movable mullions 4 and 5 respectively; two ends of each movable mullion extend into troughs of the upper guide rail 1 and the lower guide rail 2; the movable mullions 4 and 5 along with the screen can randomly move left and right; two groups of rope trains are arranged, wherein one group of rope train 6 consists of a plurality of rope yarns; a starting point of each rope yarn is arranged at one end of the upper guide rail; each rope yarn passes through a rope groove of the movable mullion on one side, runs through the folding screen from the inside of the movable mullion and returns to the other end of the upper guide rail through the rope groove of the movable mullion on the other side to reach an endpoint; and the line style of each rope yarn is of a snow shape; and the other group of rope train 7 consists of two rope yarns which take the left end and the right end of the upper guide rail as the starting points respectively, enter the rope grooves of the movable mullion on one side from the upper side, enter the lower guide rail from the lower side of the rope grooves of the movable mullion and take the other end of the lower guide rail as the endpoints; and the line type of each rope yarn is of a leftwards inclined snow shape and a rightwards inclined snow shape.