The invention discloses a bushing for pipeline connection and a forming method, and belongs to the technical field of pipe fitting machining. For the problems that an existing nodular cast iron bushing can not directly make contact with fluid and needs to be coated with epoxy resin in a spraying manner, the production process is complex, and the casting and machining cost is high, the following scheme is proposed. The bushing for pipeline connection comprises a pipe section, and a protrusion section is formed on the outer wall of the pipe section through a bulging tool. The forming method comprises the following method steps of pipe section preparing, pipe section two end sealing and protrusion section forming through the bulging tool in a bulging manner. According to the bushing for pipeline connection and the forming method, a protrusion with a certain size is bulged on the pipe section made of stainless steel or other materials by means of the bulging tool in a hydraulic or other bulging manner, and the protrusion has the effects of sealing rubber ring fixing and installing guiding; and in addition, the production process is simple, the casting and machining cost is low, and thebushing for pipeline connection is suitable for being used and popularized.