In the temperature range from room temperature to the glass-transition point (T_g) of matrix, elastic moduli of CFRP-UD composites, CFRP-FW cylinders and Epoxy resin are measured. An electro-optical extensometer, Zimmer model 200 X, is used in these experiments. Experimental results of E_x are compared with the numerical results by the authors' computer program based on measured data for Epoxy and an agreement is very good. Temperature dependency of E_x is directly influenced by that of E_m, but E_z is almost independent of E_m. It should be noted that ν_m has considerable effect on E_x, particularly at near T_g point. Curing temperature history changes trends of temperature dependency of E_m at most Epoxy.