A micro-energy acquisition device, comprising: a radio frequency circuit configured to generate a ground voltage according to a micro-energy voltage and output the ground voltage through a ground terminal; a first unidirectional conduction component connected with the radio frequency circuit and configured to make the ground voltage to flow unidirectionally so as to generate a first voltage; and a microprocessor connected with the first unidirectional conduction component and configured to generate a supply voltage according to the first voltage, and being operated according to the supply voltage; characterized in that, the microprocessor comprises a first input/output port and the first input/output port is provided with a pull-up switch transistor, a capacitance (Cgs) between a gate electrode and a source electrode of the pull-up switch transistor is charged according to the first voltage, and a charging voltage is generated, and the pull-up switch transistor is turned on according to the charging voltage to enable a drain electrode of the pull-up switch transistor to be powered up to generate the supply voltage, and the microprocessor is operated according to the supply voltage; the first input/output port of the microprocessor is connected with the first unidirectional conduction component; wherein the microprocessor is further configured to generate a control signal according to the supply voltage; the micro-energy acquisition device further comprises: a switch circuit connected with the radio frequency circuit and the first unidirectional conduction component and configured to conduct the first voltage with a power ground according to the control signal; the microprocessor further comprises a third input/output port, and the microprocessor is further configured to output the control signal through the third input/output port; the micro-energy acquisition device further comprises: a first energy storage element connected with a power terminal of the microprocessor, and configured to store electric energy according to the supply voltage and provide a second voltage; and the microprocessor is further configured to be operated according to the second voltage. a radio frequency circuit configured to generate a ground voltage according to a micro-energy voltage and output the ground voltage through a ground terminal; a first unidirectional conduction component connected with the radio frequency circuit and configured to make the ground voltage to flow unidirectionally so as to generate a first voltage; and a microprocessor connected with the first unidirectional conduction component and configured to generate a supply voltage according to the first voltage, and being operated according to the supply voltage; characterized in that, the microprocessor comprises a first input/output port and the first input/output port is provided with a pull-up switch transistor, a capacitance (Cgs) between a gate electrode and a source electrode of the pull-up switch transistor is charged according to the first voltage, and a charging voltage is generated, and the pull-up switch transistor is turned on according to the charging voltage to enable a drain electrode of the pull-up switch transistor to be powered up to generate the supply voltage, and the microprocessor is operated according to the supply voltage; the first input/output port of the microprocessor is connected with the first unidirectional conduction component; wherein the microprocessor is further configured to generate a control signal according to the supply voltage; the micro-energy acquisition device further comprises: a switch circuit connected with the radio frequency circuit and the first unidirectional conduction component and configured to conduct the first voltage with a power ground according to the control signal; the microprocessor further comprises a third input/output port, and the microprocessor is further configured to output the control signal through the third input/output port; the micro-energy acquisition device further comprises: a first energy storage element connected with a power terminal of the microprocessor, and configured to store electric energy according to the supply voltage and provide a second voltage; and the microprocessor is further configured to be operated according to the second voltage. a switch circuit connected with the radio frequency circuit and the first unidirectional conduction component and configured to conduct the first voltage with a power ground according to the control signal; the microprocessor further comprises a third input/output port, and the microprocessor is further configured to output the control signal through the third input/output port; the micro-energy acquisition device further comprises: a first energy storage element connected with a power terminal of the microprocessor, and configured to store electric energy according to the supply voltage and provide a second voltage; and the microprocessor is further configured to be operated according to the second voltage. a first energy storage element connected with a power terminal of the microprocessor, and configured to store electric energy according to the supply voltage and provide a second voltage; and the microprocessor is further configured to be operated according to the second voltage.