Abstract: The efficient reformulation of higher-order theory was deduced.In this approach,averaged quantities at the interface were the primary variables,and the averaged quantities were used to replace the coefficient of temperature.By using the heat exchange equations,the relationship between heat flux and average temperature was established,and temperature field was solved.This procedure reduces the number of equations involved and eliminates the concept of generic cells.The temperature fields of fiber reinforced composite at micro-level were calculated.Numerical results agree well with the available results from finite elements and theoretical analysis.