The aim of the study is to deeply study the effect of the PBL teaching mode in improving students’ problem-solving ability, learning interest and autonomous learning ability. This study takes the practice teaching of film and television courses for normal students as the research object, constructs a general network teaching platform based on B/s and PBL teaching mode, deeply investigates the teaching status of film and television production practice courses, and selects the experimental class and control board to test the PBL teaching mode. The test results show that 13 students in the experimental class have a general learning attitude, 12 students have a good learning attitude, 7 students have a good learning attitude, and 5 students have a very correct learning attitude. This shows that 24 students have a positive learning attitude in the PBL teaching mode, which shows that they are very interested in learning information technology courses. At the same time, it also verifies the feasibility of the PBL teaching mode. At the same time, on this basis, this study puts forward some suggestions for the optimization of PBL teaching design under the network teaching platform.