Abstract: Base on the previous studies, the forest productivity is evaluated on macroscopic so that forest supply ability can be enhanced to the most advanced extent though forest rebirth and cultivation. The grade of forest productivity including actuality and expectation is computed according to forest amount, forest average amount per hectare, the growth quantity and the timber output. Through the study on the grade of forest actual and expect productivity, the result indicated that the grade of forest actual productivity in China is at low level, so resuming and increasing the forest productivity in China is an urgent demand. Starting with the forest actual productivity and aiming to the forest expect productivity, the approaches on improving forest productivity are put forward for the purpose that the benefit of forest resources can be in full function.