Abstract: Studied the influence of the mood on creativity of the students. Ss were 220 second grade students in Secondary School No.3 attached to Shanghai Teachers University, in which were 104 boys and 116 girls, 13～14 years old. However , the results of the studies abroad are contradictory to each other. The methods of their studies also have poor ecological validity. This paper tried to explore the influence of the students mood on their creativity in teaching activities through field experiment of teaching and using the stimuli in real teaching situation to induce happy sad mood of the students. The results showed that the students in happy mood bring their creativity to a higher level than the students in sad mood in significant level generally( t =2.025, p =0.045), demonstrated mainly in fluency and flexibility.

Key words: mood, creativity, ecological validity