数学是一门活学活用的学科,可在现实教育教学过程中为更好地满足于应试的需要,数学教师存在依照大纲、墨守成规等的教学问题,而学生在这种老师起主导作用下进行学习极大地抑制了学生的学习热情,挫伤了学生学习积极性,导致各种各样的教学问题层出不穷,使数学对学生能力培养的本质一定程度上并未有效发挥。本文主要通过对诊断性教学进行阐述并提出其存在的问题及建议,为诊断性考试的操作在初中数学中的应用做铺垫。 Mathematics is a subject which can be learned and used actively. In order to meet the need of exams better in the process of reality education and teaching, mathematics teachers have the teaching problems according to the syllabus and sticking to conventions, and the students play a leading role under such teachers Learning greatly inhibits students ’enthusiasm for learning, dampens the enthusiasm of students, leads to an endless stream of teaching problems, and makes the nature of mathematics to students’ ability training to some extent did not effectively play. This paper mainly elaborates diagnostic teaching and puts forward its existing problems and suggestions, which paves the way for the application of diagnostic test in junior high school mathematics.