This production method for a bio-jet fuel includes a reaction step in which a crude oil, obtained by deoxygenating a raw material oil which contains a triglyceride and/or a free fatty acid, is hydrogenated, isomerized, and decomposed in a hydrogen atmosphere by using a hydrogenation catalyst and an isomerization catalyst, under the conditions of a reaction temperature of 180-350°C and a pressure of 0.1-30 MPa.
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