The utility model discloses a non - pass of vertical cut formula load device for high -precision metering under test condition, including quick -witted case and the test circuit of setting in quick -witted case, characterized by, test circuit includes three group load Z1, Z2, Z3 and four switch S1, S2, S3, S4, input line L1, output line L2 and two resistance R1, R2, Z1, R1, Z2, R2, Z3 are in proper order establishing ties between input line L1, the output line L2. The advantage: prevented to damage and bodily injury because of the misoperation leads to non - pass metering device secondary to open a way the equipment that brings. And this load device can switch over secondary load under non - pass metering device test condition, saved test time, has reduced the experiment work volume, has reduced non - pass metering device and because of the experimental time of working, has reduced the empirical risk. This metering device has considered that the line hinders, has improved the degree ofaccuracy of device.