Abstract: This study is aimed at improving the inducers of maize, and identifying their inducing ability, and then the inducers can be taken advantage of in the haploid breeding. Evaluate the haploid inducing ability of the hybrid ‘xundan509’ with two common inducers and five improved lines. The result showed that QYG1 has the highest inducing ratio, which is 3.36%; and ZYG1 on the opposite is 0.4%; at the same time, QYG1 and ZYG2 have enhanced inducing ability when improved. Seven inducers have different inducing ratio on different part (upper part, middle part, lower part) of ear. Haploid inducing occur more on the middle-ear, then on the lower-ear, lest on the upper-ear. QYG1 can be used as a new inducer, because it has a higher plant, a large quantity of tassel pollen powder as well as long period of pollen dispersal, and strong stress resistance. The research provides reference for germplasm improving by inducer breeding and haploid breeding technique