The students of class X in SMA Negeri 2 Banjarmasin still have difficulties to solve a problem in C3, C4 and C5 level in order from indentify the information, apply the strategy to solve the problem and make a result conclusion due to less interesting instructional media that has example of problem with the step. Therefore, the reseacher did a research to know if using instructional media pocket book has an effect toward the students’ problem-solving skill. This research is a quasi-experiment research with nonequivalent group pretest-posttest design. The sample for this research are X MS 1 and X MS 5 that are taken by cluster random sampling from the population of X MS students in SMA Negeri 2 Banjarmasin. Data is obtained from learning result test and students’ individual worksheet. Data that obtained by researcher is analyzed descriptive quantitatively. The result of research show that using instructional media pocket book has an effect toward students’ problem-solving skill with the correlation of 0.98. So, the researcher can conclude that there is an effect of using instructional media pocket book toward the problem solving skill of X MS students in SMA Negeri 2 Banjarmasin. Key words: Problem-solving skill, pocket book.