The multifunctional high-pressure jet grouting pile construction monitoring device comprises a wireless module, the wireless module comprises a collection unit used for collecting a first signal and atransmission unit used for transmitting the first signal in a wireless transmission mode, the transmission unit is electrically connected to the collection unit, and the wireless module is connectedto an auxiliary structure during construction of a high-pressure jet grouting pile machine; the wired module is used for collecting a second signal and transmitting the second signal in a wired transmission mode, and the wired module is connected to a main structure during construction of the high-pressure jet grouting pile machine; and the field monitor module is used for receiving and processingthe first signal and the second signal, and is electrically connected with the wireless module and the wired module. The wireless module is mounted on the auxiliary structure, so that a first signalcan be collected, data interruption and loss caused by damage of a transmission line are avoided, the construction continuity is ensured, and the construction efficiency and safety are improved; and the field monitor module processes and analyzes the first signal and the second signal for reference of an operator.