To safely and efficiently obtain products including the subject polyester textile formed products having ammonia-deodorant performance of high washing resistance and excellent in hygroscopically exothermic tendency.

This polyester textile formed product having ammonia-deodorant performance and processed through graft polymerization is such that an ethylenically unsaturated organic acid-based compound is graft-polymerized to polyester fiber ≥4.5 in modified cross-section factor [the peripheral length of fiber cross section/(fiber cross-section area)1/2]R and ≥5% in the moisture absorption at 20°C and 65%RH.