Promoting inner-party democracy is a systematic project,but thought problem is essential,if the ideological problems do not solve,inner-party democracy won't have substantial propulsion;our system,no matter how well designed,won't be observed or executed,which can't make the inner-party democraly effectively garanteed and promoted.this paper put emphasis on the discussion and study of promoting inner-party democracy thought mechanism problem.It also puts forward that breaking non-party members thought,insisting on the party harmony and establishing intra-party legal thoughts respectively are the premise,base,core and the key of promoting inner-party democracy