The present invention relates to a fruit bag, which surrounds the exterior of a piece of fruit growing on a fruit tree to protect the same from hazardous insects or pesticides, and, more particularly, to a fruit bag for protecting a piece of young fruit such as an apple, a peach, or a pear, the fruit bag comprising: closing portions formed on both end sides of the entrance of the bag; an entrance portion formed on the center side thereof such that a piece of fruit growing on a tree can be introduced; and locking means provided on both sides of the entrance portion in opposite positions such that the entrance portion can be closed and fixed, wherein the bag can be widened and, after inserting a piece of fruit therein, easily closed and fixed, thereby effectively interrupting inflow of hazardous insects or pesticides from the outside.
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