The field coordination between velocity and heat flow fields in a tube inserted with twistedleaves discontinuously was analyzed in detail，and the field coordination number FC of four kinds of twistedleaves was compared with each other respectively by numerical simulationThe results indicated that the sequence of twistedleaves was 270-38.1（a type of twistedleaf with twist angle α=270° and swirl angle β=381°），180-38.1，270-20.3 and 180-20.3 based on FC from high to low in the same value of Re，and it was in agreement with that based on heat transfer performance from high to lowIt was an effective method for heat transfer enhancement to improve field coordinationThe inserted twistedleaves effectively improved the coordination between velocity and temperature gradient fields in the tube

thereby the heat transfer performance was enhanced.