The climate simulation for the mid–Holocene about 6000 years before present (6 ka BP) is carried out with a grid–point atmospheric general circulation model (AGCM) coupled with a biome model. This coupled model simulation employs orbital parameters of 6 ka BP but present forcing conditions. Results show that large–scale climate differences between now and then are substantial in summer with dramatically strong African–Asian monsoon flow and precipitation during mid–Holocene. Although the results of this coupled model are qualitatively close to those of the AGCM, the coupled model shows a larger changes in both precipitation and temperature in summer over the North African monsoon area with weaker cooling in the Northern autumn.