Development of mechanical strengths of cement asphalt mortars(CAMs) with varied asphalt to cement ratio(mA/mC) at 3 different curing temperatures were investigated during the age of 3120d. Standard prisms were prepared and maintained at the temperature of 0，25, 60℃ after 3d. Flexural strengths and compressive strengths of different CAMs were tested at increasing ages and the correlation between mechanical strength and age under different curing temperatures was obtained. The results indicate that high temperature curing is disadvantageous for the development of mechanical strength of CAMs with mA/mC＜0.6, however, the compressive strength development of CAMs with mA/mC＞0.6 can be promoted. The adverse effect of low temperature curing on strengths at any age was observed for any kind of CAMs. The de emulsification of asphalt emulsion is less influenced than cement hydration by the curing temperature. Last but not the least, in situ curing methods for different CAMs at mid or long age are re commended.