The invention discloses a preparation method of baking type blueberry jam. The method comprises the following steps of picking fresh and properly rape blueberry fruits without worm damage, damage, decay or mildew; removing fruit stems of blueberries and surface impurities; flushing by using flowing water; repeatedly scrubbing by hand; soaking the blueberry fruits by brine; after filtering, cleaning by clean water; draining moisture; performing hot boiling color protection on the blueberry fruits by boiling water; adding modified starch, white granulated sugar, citric acid and pectin; then, performing heating concentration and boiling; performing sterilization treatment. The baking type blueberry jam provided by the invention has good high-temperature resistant performance, and can resist baking resistance for more than 20min at the high temperature of 220 DEG C; when the baking type blueberry jam is used as sandwich filling or stuffing, phenomena of collapse, stuffing expansion, moisture loss and the like cannot occur; when the baking type blueberry jam is used for surface decoration, phenomena of surface peeling, dry drapes, air bubble generation and the like cannot occur; the baking intolerance problems that collapse, stuffing expansion, moisture loss, peeling, dry drapes, air bubble generation and the like can easily occur during the baking of the conventional jam are solved.