The work aims to explore chromatic adaptation transformation rules of individual colorimetric observers grouped by different ages under specific view conditions. Observers were grouped in a continuous way according to different ages to generate individual observers based on the Monte Carlo algorithm and an individual colorimetric observer model. Then, chromatic adaptation transformations were then carried out on those modelling observers under certain view conditions. 5000 individual observers of five age groups ranging from 20 to 70 years old were generated. The prediction results of 600,000 sets of corresponding color under certain view conditions were obtained. It is found that chromatic adaptation results of individual observers are differentiated within different age groups. They also show color specificity in different references. Moreover, there are different degrees of deviations between the color adaptation results of standard colorimetric observer and individuals corresponding to different conditions.