Given the technical problems such as noise interference and low testing accuracy existing in production logging of horizontal wells with low fluid production,a production logging method based on active thermal stimulation is proposed. Specifically,a "temperature tracer particle" heat source area with a controlled direction is formed in the wellbore,and the water content and the fluid velocity in the horizontal well are precisely measured at the same time,by monitoring the temperature rise and the movement pattern of the temperature tracer particle through the optical fiber. The results of theoretical model calculation and analysis show that for fluids with different water content,the temperatures of temperature tracer particles formed with the same heating power and heating time are considerably differentiated. The temperature rise of temperature tracer particles is higher in the case of lower water content,and vice versa. Moreover,the fluid velocity in the horizontal well can be effectively captured by measuring the velocity of the released temperature tracer particle with the optical fiber. The temperature tracer particle based on active thermal stimulation are a double tracer of both thermodynamics and kinetics—the temperature evolution directly shows the water content of fluids,and the movement velocity is an accurate measure to invert the fluid flow status. The integration of the two features provides a new technical route for the measurement of parameters of horizontal wells with low fluid production,and reliable and quantitative references for production profile logging of horizontal wells with complex wellbore conditions.