Abstract: In order to thoroughly destroy the Chinese armed forces and people's will of fighting the invading, Japan bombed Chongqing which is the Chinese temporary capital of wartime, heavily in 1940. Japanese army drew up "101 battle plans" and used the group bombs, continuous bombs, candle bombs and the "zero types" strategies. The air attack made heavy damages to Chongqing and even some foreign organizations could not escape, The timely relief work after the air attack showed Chinese people's conviction of "more bomb, more strong". People in Chongqing finally smashed the Japan's greed and carried out the Chinese strategic policy of "change time with the space" and "hold out long time for the Consume" to some extent.