The invention provides a planar flying probe tester and a PCB transmission method. The planar flying probe tester includes a material receiving mechanism, consisting of a material take-out mechanism for taking qualified and unqualified PCBs under test out of a probe bed testing material table; a loading mechanism, consisting of a feeding table, a feeding mechanical arm and a feeding conveying device; a flying probe testing host, consisting of a test host conveying device and a test device; and a laying-off mechanism, consisting of a PASS material table, an NG material table, a laying-off mechanical arm and a laying-off motion device. The material receiving mechanism and a probe bed are connected in a seamless manner, the feeding mechanism conveys the PCBs under test to the flying probe testing host and tests the electrical properties thereof, then the laying-off mechanism places the qualified or unqualified PCBs onto the PASS material table or the NG material table, and the test is completed. The test stability and accuracy are high, the retest efficiency is greatly improved, and the scrap rate of the PCBs and the retest cost are also reduced.