The invention discloses a straw collecting and baling device which comprises a chamber. A fixing plate is fixedly connected to the left side of the chamber, a first motor is fixedly connected to the back surface of the fixing plate, and a rotating shaft of the first motor penetrates the fixing plate to fixedly connect with a rotating block. A transverse rod is penetratingly arranged on the left side of an inner cavity of the chamber, and the left end of the transverse rod penetrates out of the chamber to fixedly connect with a connection plate. By joint use of the chamber, the fixing plate, the first motor, the rotating block, a roller wheel, a wheel seat, the connection plate, a spring, the transverse rod, a first push plate, a feeding pipe, a sleeve, a slide groove, a fixing block, a second motor, a threaded rod, a threaded pipe, a connector, a pulley, a vertical rod and a pressure plate, easiness, convenience and quickness in straw collecting treatment are achieved, and straw collecting efficiency is greatly improved; after straw baling, convenience in transporting is achieved, straw occupied space is reduced, and people can transport the straw conveniently.