The surface of most coccinellids (particularly the elytra) has characteristic colour patterns, which show great variability within many species. Individuals of a species of ladybird often differ from one another in colour and pattern. In case of Harmonia axyridis, environmental factors, such as temperature or food, can probably influence colour and pattern. However, virtually no work has been carried out in the influence of such factor. Therefore, in this study, according to rearing temperature, photoperiod and diet, variation of elytra color patterns were investigated. First instar larva on each color pattern were reared in an incubator at one of two temperatures; 25 and 30℃, under the following photoperiod; L16: D8, L12: D12 and L8: D16 and were provided three species of aphids. And their color pattern of adults were estimated.