Facilitator is very impoflant to electronic meetings. Due to the scarcity of qualified facilitator and elopment of automated facilitator becomes an attractive task．This study figures out the functions supporting electronic brainstorming for idea generation task，and tests those functions in the experiment setting．The user evaluations of those functions are valuable for the design of advanced automated facilitation in the future．Our experiment also shows that group members with automated facilitation support make more comments and produce more ideas than that without automated facilitation support．