Replacing printed matters, digital sources have now become the predominant channel in the information exchanges among academic communities worldwide, so much so that space planning in science library needs to take new trend into consideration. As more and more hardcopies are deemed redundant, space planning in science library would focus on factors that faculties and students of science regard as critical to their uses of e-resources. If science library is to remain relevant and play a vital role in the higher institutions of education, its design and space planning should take the form science researchers judge most suitable to meet their requirements. In this article, we used photo-elicitation to interview the students of science in National Taiwan Normal University, investigating their needs for library space. According to their responses, we proposed principles for the space planning of science library. Meanwhile, after the remodeling of the library space, we also used photo-elicitation to interview the students of science, collected users’ opinions of the new space.