At the moment there are teenagers who feel anxious when they find the thing that make them feel uncomfortable if keeps pressed it will be a nuisance. Then there is a need for a measuring tool for screening adolescent problems. This study aimed to develop and validate an instrument for screening the youth and children's problems (ISMAR) in measuring anxiety. Then correlate the anxiety scale of ISMAR and Zung Self-rating Scale. A design used by applying a quantitative technique and the data was collected by using quota sampling. There are 12 valid items with the validity value of ≥ 0.3 and coefficients reliability 0,769 In the analysis factor by 200 subjects tested using exploratory of analysis, yielding Kaiser Meyer Olkin Measure of Sampling Adequacy (KMO-MSA) value of 0,752 with 0,000 significance. Besides that based on the rotated component matrix, 4 factors accounted for anxiety in ISMAR. By the concurrent validity that is resulting in value 0,479. It can be concluded that ISMAR had good validity and reliability and also had a positive correlation with the Zung Self-rating Anxiety Scale (ZSAS) although a weak correlation.