The invention relates to an agricultural machine, in particular to a rice-wheat threshing bundling machine. In the bundling machine, a power source is connected with a power input shaft by a belt; the tail end of a stock guide plate of a thresher is fixedly connected with a fixed base of the bundling machine by a screw; a connecting rod mechanism is positioned above a gear box and consists of a connecting rod, a short plate, a connecting shaft and a crankshaft; an involute clutch is arranged in the gear box; and a knotting mechanism comprises a support frame, an intermittent gear transmissionmechanism, a shifting fork, a shifting fork support, a lead pin and a knotting mechanism control handle. Harvested crops are put into a feed inlet of the thresher to be threshed, and residual straw is transmitted to the bundling machine and is collected continuously by a collecting claw; after a bundle of straw is collected under the action of the involute clutch, the collecting claw stops operating, the bundling device completes bundling, and a bundle of bundled straw is moved by the shifting fork; and the threshing bundling can be completed by circulating the process.