Technology of horizontal well for thermal recovery has been widely applied in heavy oil reservoirs. However，heterogeneity of the reservoirs results in the problem of uneven inflow distribution along the horizontal wellbore，which has influence on the development effect of the horizontal well for thermal recovery in the heavy oil reservoir. So a novel method for balanced production was put forward through variable-density hole in central tube. Based on pressure drop analysis of actual reservoir flow，throttle of drainage hole and pipe flow of the central tube，a mathematical model of the balanced production of horizontal well for thermal recovery in the heavy oil reservoir was built and its solution method was determined.Optimization design was made combined with a case. The results show that the inflow profile of horizontal section can be regulated effectively by optimizing the hole density distribution in the central tube，thus balanced production of the horizontal well for thermal recovery may be realized and the producing degree of reserves in the heavy oil reservoir will be improved.