A probe switching device, comprising at least two switching switch assemblies and at least two probes, wherein each of the switching switch assemblies corresponds to each of the probes, each of the switching switch assemblies comprises a first switch component and a second switch component, the first switch component is provided with a force applying block, the second switch component consists of two fixed contactors and a bridge contactor, each of the probes corresponding to each of the switching switch assemblies is connected to one of the two fixed contactors, and the bridge contactor is capable of being controlled to be in contact with or be disengaged from the two fixed contactors by moving the bridge contactor; wherein when the force applying block is pressed against the bridge contactor, the bridge contactor is in contact with the two fixed contactors in such a way that the two fixed contactors are electrically connected; wherein an electrical signal passes through the bridge contactor and the two fixed contactors to reach the corresponding probe, the corresponding probe converts the collected information into an electrical signal and transmits the electrical signal back to the bridge contactor and the two fixed contactors, and the current probe is switched to the probe corresponding to the switching switch assembly; wherein the probe switching device further comprises at least one switching rotating shaft, a plurality of first switch components are arranged around the switching rotating shaft in the axial direction thereof in such a way that the overall shape is similar to a barrel-shaped structure and the switching rotating shaft is provided therein, and the probe switching device further comprises a probe control board, at least two first sensing components and at least two second sensing components, each of the first sensing components is circumferentially distributed on the switching rotating shaft, and each of the second sensing components is provided on the probe control board; wherein each of the first sensing components comprises a sensor, each of the second sensing components comprises a signal source, the sensor corresponds to the signal source, the sensor corresponds to the switching switch assembly, and the sensor is used to control the on/off of the switching switch assembly. wherein when the force applying block is pressed against the bridge contactor, the bridge contactor is in contact with the two fixed contactors in such a way that the two fixed contactors are electrically connected; wherein an electrical signal passes through the bridge contactor and the two fixed contactors to reach the corresponding probe, the corresponding probe converts the collected information into an electrical signal and transmits the electrical signal back to the bridge contactor and the two fixed contactors, and the current probe is switched to the probe corresponding to the switching switch assembly; wherein the probe switching device further comprises at least one switching rotating shaft, a plurality of first switch components are arranged around the switching rotating shaft in the axial direction thereof in such a way that the overall shape is similar to a barrel-shaped structure and the switching rotating shaft is provided therein, and the probe switching device further comprises a probe control board, at least two first sensing components and at least two second sensing components, each of the first sensing components is circumferentially distributed on the switching rotating shaft, and each of the second sensing components is provided on the probe control board; wherein each of the first sensing components comprises a sensor, each of the second sensing components comprises a signal source, the sensor corresponds to the signal source, the sensor corresponds to the switching switch assembly, and the sensor is used to control the on/off of the switching switch assembly.