The purpose of this study is to develope wrinkle recovery property, DP rating of Tencel by using BTCA(1,2,3,4-butanetetracarboxylic acid) and MgCl$_2$ that does not make water pollution. The adoptable condition to improve the wrinkle resistance and DP rating was determined 10％ BTCA(o.w.f), 3％ catalyst(o.w.f), 0.5％ softener(o.w.f), 5min padding time, 150$^{circ}C$ curing temperature, 2min curing time and pH 2.7. It was proven that ester groups were formed and cross-links increased by treating Tencel with BTCA. By XPS diffraction, Tencel treatment using BTCA was proved not to affect crystal formation.