Forest ecology is the main body of terrestrial ecosystems.Forestry, which takes managing, protecting and utilizing forest resources as its main activities, holds an important position in improving ecology and national economy sustainable development.The financial funds invested in forestry by China government have increased greatly to impel its comprehensive development.This paper employs the DEA-model to estimate and analyze actual forestry input-output efficiency in the period between 1993 and 2010.The results show that the forestry input-output efficiency in China is quite high in general from 1993 to 2002 with the combined efficiency mean value of 0.994.However, the average combined efficiency value reduces to 0.932 during 2003 and 2010 with violent fluctuation.Labor input and forestry primary industry output value have significant impact on forestry input-output efficiency in China.Combining with the analysis result and the reality of Chinas forestry development background, we can see that it is the low utilization efficiency of forestry investment funds, shortage of human resource input, and low level of forestry economic development leading to the reduction of the forestry input-output efficiency in recent years.Given the dominant position of forestry in ecological construction, government takes on important responsibilities Therefore, China government should further increase forestry investment in the future, especially in forestry education and science and technology, improving forestry infrastructure, strengthening the investment management, and reforming forestry resources management system, to attract more economic entity to work on fortry.