Earth Hour was born with a noble purpose, but it also encountered many mixed opinions. During the time of Earth Hour, many candles were lit to support and replace household electrical appliances. But the number of candles lit too large also causes the temperature to become too high. At the same time, all kinds of waste: placards, slogans, etc. to propagate Earth Hour are non-biodegradable waste. Many people only participate in Earth Hour following the trend and then consume electricity in an ecological way. too. This is going against what Earth Hour is all about.Earth Hour has practical significance for humanity. However, by our own consciousness, we need to be self-aware of our actions, not waiting for a call or propaganda.