This research aimed directly at exploring correlative relationship on task participation and school's administratively effective perception for teachers with part-time administrative task in junior high school. In order to achieve this researching purpose, method of questionnaire was taken for further exploration and discussion. Population of this research was based on 147 public junior high school in central Taiwan promulgated by Minister of Education in 2006 academic year. Random sampling technique was adopted by extracting 52 sampling schools in which effective questionnaires were 593 with effectually returned rate of 82.5%. Conclusive result was substantiated like this: That teachers in junior high school with part-time administrative task perceptively discovered current condition on "task participation" and "school's administratively effective perception" quite excellent denoted that having one without the other both sides couldn't coexisted., as far as teachers in junior high school with part-time administrative task possessing different age, diverse wedding condition, unlike education background, variant part-time administration seniority, differentially part-time administrative office and dissimilar school scale were concerned, there seemed to have significantly manifest differentiation in the aspect of their perception of "task participation"., as far as teachers in junior high school with part-time administrative task possessing different age, diverse wedding condition, unlike education background, variant part-time administration seniority, differentially part-time administrative office and dissimilar school scale were concerned, there seemed to have significantly manifest differentiation in terms of their perception of "school's administrative effectiveness"., there seemed to be an evidently positive correlation that teachers in junior high school with part-time administrative perceived interrelationship between "task participation" and "school's administratively effective perception".