Abstract: Mencius' thought on general psychology was systematically argued in thispaper, (1) basic views on psychological thought; (2) psychological thought onperception and thinking; (3) psychological thought on emotion and desire; (4)psychological thought on will and motivation; (5) psychological thought onintelligence and ability; and (6) psychological thought on human nature andpractice.

Key words: ear and eye can't think, heart has function of thinking, theory on the four good moralities, view on the function of the will, intuitive knowledge and unlearned ability, doctrine that human nature is good