The present invention discloses an outdoor canopy having a tarpaulin drawing adjustment structure. The outdoor canopy includes a canopy frame and a tarpaulin. The canopy frame includes a column, longitudinal beams and horizontal beams. The tarpaulin is disposed on the horizontal beams and hanging from an outermost one of the horizontal beams. Both ends of the tarpaulin are provided with a tarpaulin-passing sleeve, and the tarpaulin-passing sleeve is provided inside with a tarpaulin-passing tube. A sliding mechanism for adjusting a drawing position of the tarpaulin is disposed between both ends of the tarpaulin-passing tube and the column.