The output stability of power supply for Heavy Ion Research Facility of Lanzhou (HIRFL) is signicant. Powersupply provides currents to magnets which produce the magnetic eld to constraint particles. So the output stabilityof power supply has a great signicance to the quality of beams. In order to test the stability of power supply, weuse a Fluke 8846A digit precision multimeter based on LabView platform of National Instrument Corporation.Remote operation of 8846A Digital Multimeter from a host, that is a terminal, controller, PC, or computer, isaccomplished by sending commands to it through one of its remote interfaces. The Multimeter is controlled remotelyusing Standard Commands for Programmable Instruments (SCPI), Fluke 45 or Fluke 8842A (8840A and 8842A)commands. The meter can be remotely controlled through the LAN port on the Meter's rear panel[1] We can sendSCPI commands to the Meter using network communicating controls provided by LabView[2]. This program couldbe used to test output stability of power supply of HIRFL.