Problem Based Learning (PBL) is a new teaching model that starts from real problems in a complex world. This model takes students as the main body. Teachers design certain situations to link learning with real and poorly structured problems, so that students can generate and analyze problems independently in the situation, solve problems through learners' independent inquiry and group cooperation, learn to acquire the core knowledge of the subject hidden behind the problem, construct a knowledge framework, and then improve students' autonomous learning ability and problem‐solving ability. This study attempts to apply the PBL teaching model to the teaching of building electrical and intelligent professional courses. It intends to take some professional courses of building electricity and intelligence as an example to explore the feasibility of PBL teaching, which can make up for the deficiencies of various teaching methods and promote theoretical and practical connection, improve the teaching quality, and promote the teaching reform of building electrical and intelligent major.