This study aims to determine: students' problem-solving abilities on environmental pollution material using problem-based learning and regular learning in class VII Junior High School, obtaining information about student attitudes during problem-based learning, examining student activities on problem-based learning, and obtaining information about management of teacher teaching and learning activities on problem-based learning. This research is an experimental study at SMP Negeri 1 Sampara, with the population as the subject being all students of SMP Negeri 1 Sampara and taking 2 samples of class VII randomly from 4 existing classes. To obtain research data, instruments were used in the form of problem-solving ability tests, student attitude scales, student learning activity observation sheets, problem-based learning management observation sheets. To see the difference in problem-solving abilities between groups of students who received problem-based learning and groups of students who received regular learning, the t-test was used at= 0.05 after the testing prerequisites were met. The results of this study indicate that (1) the problem-solving ability of the group of students who received problem-based learning was better than the group of students who received conventional learning; (2) students' attitudes in the experimental group towards problem-based learning were positive; (3) problem-based learning has created conditions for active students; (4) the teacher's ability to manage problem-based learning activities is good.