Insulating oil dielectric loss and resistivity tester is used for measuring dielectric dissipation factor and DC resistivity of insulating oil and other insulating liquids. The tester is characterized by integrated structure, and integrates test cell, temperature controller, temperature sensor, dielectric loss test bridge, AC test power, standard capacitor, high resistance meter, DC high voltage source and other major components. The instrument adopts full digital technology and all of the intelligent automatic measurement, is equipped with large screen (240*128) LCD display with full English menu, which each step has prompted the Chinese, the test results can be automatically stored and printed output, so that the operator without professional training will be able to use it proficiently.