An accuracy and stability forwarddifference scheme is presented for the solution of dualhyperbolic two temperature model.In this algorithm,one kind of artificial viscosities and adaptive time steps method is introduced.Taking a 50nm gold film as example,the temperature dependences of thermal properties and optical properties had been studied. The author′s primary researches are on the microcosmic course of heat transfer when a 50nm gold film is irradiated by 0.1ps laser pulse. The results indicated that the change of electron thermal conductivity is massive. Using the initial thermal conductivity will overvaluate its ability. Splitblip of electronic heat flux will appear,when lagging heat flux is considered. The distribution of electronic heat flux will be different under differential laser intensity. But during the progress of electron temperature rapid changing,the variation is not obvious.