The utility model discloses a round broaching tool with a guide sleeve relating to a cutting machining tool. The utility model provides a round broaching tool with the guide sleeve having advantages of flexible guiding function, simple machining, and strong replacement. The round broaching tool provided in the utility model is provided with a round broaching tool and a guide sleeve. The round broaching tool is provided with a guide sleeve installation part, a cutting part, and a rear guide part. The guide sleeve is disposed on the guide sleeve installation part of the round broaching tool, and the guide sleeve is circular-shaped and made of plastic materials, thereby the machining is simple, and the costs are low. The guide sleeve has strong replaceability, when the guide sleeve is machined after the machining for a plurality of times. The guide sleeve has no harm on the pipe materials by the guiding process. The guide sleeve can continuously move forwards, when the cutting machining is continued, and the guide sleeve can always guide the round broaching tool on the cutting part, thereby the machining error caused by the excessive eccentric phenomenon of the pipe materials and the round broaching tool can be prevented.