The invention relates to the field of machinery and particularly relates to a simple and easy steel pipe arch bridge and arch rib closure device. The simple and easy steel pipe arch bridge and arch rib closure device comprises chord pipes, wherein a butt joint part of the two chord pipes is a butt joint sleeve; the butt joint sleeve comprises a basket-like nut; the inner wall of the basket-like nut comprises a thread and further comprises basket-like screw rods which are spirally connected to the two sides in the basket-like nut; a base plate is connected with the basket-like screw rod on each side; and the base plates are connected with the chord pipes. The simple and easy steel pipe arch bridge and arch rib closure device is simple and reasonable in structural design and is convenient to construct and operate; instant closure construction of a steel pipe arch bridge can be finished in a time-saving and labor-saving manner; the closure precision and arch rib stress are adjusted relatively well, and safety risks of long-time overhead work is alleviated; and the simple and easy steel pipe arch bridge and arch rib closure device has the advantages of reasonable structural design, simplicity in operation and low construction cost.