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. <EOS>