The invention discloses a fiber paste spraying and conveying device. The fiber paste spraying and conveying device comprises a fiber paste conveying part and a fiber paste spraying part. According to the fiber paste conveying part, a pressure gage and a first controller are connected to the upper portion of a fiber paste pressure tank; an exhaust valve is connected to the part, on one side of the pressure gage, of a tank body; an overpressure overflow valve is installed on the upper portion of the other side of the tank body and is connected with a first pipeline; the other end of the first pipeline is connected to the top of a fiber paste bucket; a second pipeline is further connected to the tank body of the fiber paste pressure tank and is connected to the bottom of the fiber paste bucket; and a third pipeline is connected to the bottom of the fiber paste pressure tank and is connected with the fiber paste spraying part. According to the fiber paste spraying part, the third pipeline is in parallel connection with two or more spraying pipelines and then connected with a spraying box. According to the fiber paste spraying and conveying device, the purposes that during spraying of a steel core, an optical cable core and a steel/aluminum strip, fiber paste conveying equipment is shared, and fiber paste oil mist is prevented from flying out of the equipment during fiber paste spraying are achieved.