Abstract: Both airflow velocity and temperature data measured at the different lattice points of egg-field of the 9JF(C)-168 Incubator were computed in statistical method, and their variation and inter-relation were analyzed. The regression equations between airflow velocity and temperature and its quadratic mean deviation were established. It was indicated that the temperature field in an incubator could be indirectly studied by the measurement of its airflow velocity instead of temperature which is relatively difficult to be measured.