Abstract: Transducer is the key device of eddy current testing equipment. Based on the principle of eddy current testing, the chief factors which affect the reliability of testing were analyzed, the method and requirements for the new type transducers designing and manufacturing were determined. After connected with the type of STATOGRAPH ECM 2.841 eddy current testing instrument made in Germany, the test on the zirconium alloy tube with standard artificial defects and on the zirconium alloy tube with dimensions variation by the original transducer and the ones made by ourselves have been made respectively. The results show that the transducers made by ourselves can reach the effectivity of the original transducer and retain superiorities of high anti-interference, high sensitivity, good practice effectivity and high property to price ratio.