The invention discloses a multifunctional concrete joint-making machine. The multifunctional concrete joint-making machine comprises a joint-making vehicle assembly and a joint-making vehicle traction device which drives the joint-making vehicle assembly to move along a rack assembly direction, wherein the joint-making vehicle assembly comprises an expansion joint making assembly which is connected to the joint-making vehicle traction device via an expansion joint assembly hanger; the expansion joint making assembly comprises an expansion joint vibration motor and an expansion joint knife frame which vibrates under the driving of the expansion joint vibration motor; an expansion joint making knife is mounted on the an expansion joint knife frame; the expansion joint making assembly further comprises an expansion joint bracket which vibrates under the action of a vibration roll vibration motor; a vibration roll which rotates under the driving of a vibration roll part is mounted on the expansion joint bracket. The multifunctional concrete joint-making machine can complete vibration joint making of an induced joint and an expansion joint through one-stop operation, and puts strip parting material into the joint while making joints; the multifunctional concrete joint-making machine has the advantages of high joint-making efficiency, good joint-making effect and low noise and can be used for joint-making processing of canal bottoms in various shapes such as a whole section, a half section and the like.