Brainstorming is widely used in problem solving, which generates a large number of innovative ideas by guiding and stimulating intuitive and divergent thinking. However, in practice, the method is limited by the brain capacity of both individuals and work teams, especially the experience and knowledge they possess. How do ideas come from the brains like storming? Based on the new discipline of Extenics, we propose a test that explores the process of how ideas are brought out of the brain, helping people think multi-dimensional and get more ideas. Extenics has been applied since 1983 to study the extension and transformation of things, and to obtain the creativity to solve contradictory problems intelligently. With the support of information technology and artificial intelligence, we systematically collect more information and knowledge to form a basic-element information base and build human-computer interaction models to make up for the limited information and knowledge in the human brain. In addition, we provide a methodology to help people think positively in a multidimensional way based on the guidance of the Extenics in the brainstorming process. The integration of Extenics with brainstorming method provides a systematic new direction for improving brainstorming method in big data environment. The case study initially verifies the effectiveness of our new method.