Abstract: Main climate factors were observed in Eucalyptus camaldulensis forest, Eucalyptus camaldulensis and Cajanus cajan mixed forest and other areas with the same site condition outside the forests in the same time of April to May, 1994 and 1995 Based on the above observation, it was found that there were effects of regulating the temperature, increasing the moisture and decreasing the wind speed in the above two stands, while the microclimate effects of the Eucalyptus camaldulensis and Cajanus cajan mixed forest were stronger than that of the Eucalyptus camaldulensis pure forest during the dry season.