This paper examines the Ma-tsu worship in Taiwan and explores the relationships between Ma-tsu and war history. Originally Ma-tsu was an ocean protector, then became a harvest goddess, and to war goddess. During the world war II time Taiwan was seriously damaged by the bombards of American air force(B24 B25 B29).The Japanese mobilized Taiwanese people to meet the war conditions. The air attack was a huge shock and made men helpless so only could get supports and protections from Ma-tsu. There were many legends about Ma-tsu held the bombs to protect the followers around the island. The facts of B29 bombard and Ma-tsu legends combined to make a special collective memory of the Taiwanese people during the last sphase of the world war II.