This invention relates to a printing apparatus and a conveyance control method capable of allowing even an arrangement having a plurality of conveyance rollers in a printing medium conveyance path to accurately control conveyance of a printing medium. A pattern having a predetermined uniform density is printed on a printing medium a plurality of number of times by using a printhead while conveying the printing medium and changing the conveyance amount by a small amount. A conveyance correction amount obtained on the basis of the conveyance amount upon printing a pattern selected from a plurality of printed pattern is stored in a storage medium. Conveyance of the printing medium is controlled while correcting the conveyance amount of the printing medium by the conveyance means on the basis of the conveyance correction amount stored in the storage means.