The invention discloses an ultra-high-voltage converter station based direct-current field micro-inductor general-purpose tester which comprises a processor, a direct-current voltage sampler, a directcurrent sampler, an AD converter, a 12C storage device, a USB flash disk processor, a touch liquid crystal display, a thermal printer and an R-type transformer, wherein the direct-current voltage sampler, the direct current sampler, the AD converter, the 12C storage device, the USB flash disk processor, the touch liquid crystal display and the thermal printer are connected to the processor; the R-type transformer is connected with an RCL test power supply and an alternating current source gear; the RCL test power supply and the alternating current source gear are connected to the processor; the RCL test power supply is further connected with a constant current source and gears and a four-terminal measuring terminal. The ultra-high-voltage converter station based direct-current field micro-inductor general-purpose tester is ingenious in structure, the capacitor, inductance and direct current resistance can be integrated, the one-machine multi-purpose effect is achieved, and field testrequirements are well and conveniently met; moreover, the test of inductance and direct current resistance is completed by virtue of primary connection, and the working efficiency of field personnel is improved.