PURPOSE: A deodorizing agent for oral cavity containing Syzygium samaragense or Syzygium aquaeum is provided to ensure excellent deodorizing activity and to apply to composition for oral cavity and food product. CONSTITUTION: A deodorizing aent for oral cavity contains Syzygium samaragense or Syzygium aquaeum extract. The extract is leaf extract of Syzygium samaragense or Syzygium aquaeum. A food product contains the deodorizing agent having Syzygium samaragense or Syzygium aquaeum extract. The extract is obtained using water, methanol, ethanol, propanol, ether, chloroform, acetic acid ethyl, acetone, glycerin, and propyelen glycol.