对旧抽油杆的漏磁探伤灵敏度和盲区进行了分析。介绍了旧抽油杆维护的行业标准和漏磁探伤的国家标准,就如何把两个标准结合起来从而确定旧抽油杆漏磁探伤的灵敏度提出了建议。分析了抽油杆漏磁探伤产生盲区的原因,指出了盲区补探的必要性,并建议用超声法进行盲区补探。 The sensitivity and dead zone of the leakage testing of the old sucker rod were analyzed. The industry standards for old sucker rod maintenance and the national standards for magnetic flux leakage testing are introduced, and suggestions are made on how to combine these two criteria to determine the sensitivity of old sucker rod MFL testing. The causes of the blind zone in the sucker rod flux leakage testing are analyzed. The necessity of the blind spot exploration is pointed out. It is also suggested to use the ultrasonic method to make blind spot exploration.