With the increasingly serious shortage of water resources, protecting water resources and water conservations has become an urgent task for human beings. If we do not cherish the water, then the last drop of water in earth would be our tears. At present, some countries are facing with water shortage, and there are more than one billion people can’t drink clean water. Therefore, water conservation must be attached more attention than ever before. The problem of water shortage of the urban population has become increasingly prominent. Some people may think that we can do nothing for water conservation or our efforts make no use to it. However, great things may be done by mass effort. As long as each of us has the sense of water conservation and take actions, we can see huge changes.