Protection of trees is to protect human beings themselves! Tree of human friend, deforestation would cause serious threat to humanity. Data to show that: the forest is nature's cleaners, oxygen manufacturing plant. Forests can absorb harmful substances, forest to soil and water; forest to raising water, can retain 10-20% of rainfall, forests can absorb moisture in the soil through transpiration; wind sand trees can reduce the voice. If there is no forest, no trees, not only will cause soil erosion, will also create a climate to deteriorate.