Sodium hypophosphite(SHP) has been reported to be the most excellent catalyst for 1, 2, 3, 4-butanetetracarboxylic acid(BTCA) in durable press finish of cotton fabrics. But it has some disadvantages in respect of price, environment, and dyeing, etc. In this study sodium lactate was used as an alternative catalyst to sodium hypophosphite and found to be comparable catalyst to SHP for BTCA. The reaction mechanism of BTCA and cellulose was reviewed and discussed by referring to the FT-lR spectra. Tearing strength and abrasion resistance of BTCA treated fabrics were improved when a little quantity of softening agent was added to the treating bath.