His main research interests lie in the areas of fuzzy measure, fuzzy optimization, fuzzy machine learning, multi-objective, bilevel, and group decision making and recommender systems.

Guangquan Zhang has published five monographs, five reference books, and over 500 papers in international journals and conferences. Dr. Zhang has won 10 very competitive Australian Research Council (ARC) Discovery Project grants, one ARC Linkage Project grant and many other research grants. He has supervised 30 PhD students to completion and four of them have received best paper awards or best PhD thesis award. He has served as a Guest Editor for five special issues of international journals. He has also been invited to serve on several Editorial Boards of International Journals.