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根据电磁场理论，求解了在矩型波导中载有超导样品时反射系数和透射系数的严格表达式．在２ｃｍ波段上，用微波传输法测量了ＹＢＣＯ超导薄膜的微波表面电阻．测量结果表明：微波传输法是测量高温超导薄膜表面电阻的一种可行方案．文中还对测量结果及误差作了定性分析．
According to the theory of electromagnetic field, the strict expression of the reflection coefficient and the transmission coefficient of the rectangular waveguide loaded with superconducting samples was solved. The microwave surface resistance of YBCO superconducting thin films was measured by microwave transmission at 2 cm band. The measurement results show that the microwave transmission method is a feasible solution to measure the surface resistance of high temperature superconducting thin films. The article also made a qualitative analysis of measurement results and errors.