This study examined the relations between home-environment, mother s vacational environment, vocational sense and the career maturity of their child in gril s high school, Also the study tried to help the children find the proper vacation and to guide them in school. The subjects of this study were 514 couples of mothers and their children in girl s high school (2nd grade) living in In-cheon. Statistics used for data analysis are Frequency, Percentage, One-way ANOVA, DMR(Duch s Multiple Range Test), T-test and Pearson s correlation coefficient. The main results were as follows: 1. To think of the career maturity of child in home-environment variable, it differed significantly by mother s age, mother s standard of education and father s vocation. 2. According to the mother s vocational environment variablees, career maturity of child differed significantly by work-state, the degree of vocational satisfication. 3. To think of the general tendency of mother s view of vocation, the attitude of choosing vacaion is independent whether mother has work or not. The attitude of work and sex-role is openhearted whether mother has work or not. The attitude of work and sex-role is openhearted whether mother has work or not. The attitude of work-value is more important in the case of mother s having work. The attitude of work-respect is formal in both case. In general, whether mother has work or not, there s no difference in the mother s vocational sense. 4. The corelations between the mother s vocational sense and career maturity differed significantly by the attitude of chdoosing vocaion. 5. The career maturity of high school student differed significantly whether they are commercial high school student or academic high school student. Based on the findings, it is recommended the mother s age, the standard of education, the degree of vacational satisfication and the view of vocation are more influenced on the child s career maturity than the mother s work itself.