Abstract: Experimental philosophy has become a new philosophical movement in the recent years， which applies the empirical methods for such areas as social science and cognitive science to explore the important philosophical propositions or theories by lay peoples intuition， and questions or verifies the rationality of such propositions or theories by analyzing empirical data. Traditional epistemology holds that knowledge is a justified true belief; however， it has been challenged by Gettier problems and raised a prolonged dispute on the definition of traditional knowledge. Experimental philosophers have also joined in the debate and believed that traditional epistemology is based on the universality and reliability of peoples intuition， but challenged some views of traditional epistemology by experimentally confirming the changeability and diversity of peoples intuition.

Key words: epistemology, Gettier problem, experimental philosophy, experimental method, intuition