Infrared sensitive photosensitive composition, comprising a composition by is percentage weight of: • 30-70% water soluble thermal cross-linking resin, said water soluble thermal cross-linking resin is urethanized and unsaturated vinyl multi-component co-polymer A with weight-average molecular weight comprised between 5000 and 200000, having a chemical structure of: where R1 and R2 are hydrogen or methyl, R3 is CH2=C COOCH2CH2NCO-group, R4 is amide group, polyethoxylated ether group or pyrrolidone, where m is 40∼70% by weight of co-polymer unit, n is 10∼30% by weight of co-polymer unit, o is 10∼30% by weight of co-polymer unit, p is 10∼30% by weight of co-polymer unit; • 1-20% water soluble photo cross-linking or polymeric resin, said water soluble photo cross-linking or polymeric resin is sulfonic acid group containing and unsaturated and water soluble co-polymer B, having a chemical structure of: where R3 is CH2=C COOCH2CH2NCO-group, R5 and R6 are hydrogen or methyl, where x is 20∼40% by weight of co-polymer unit, y is 10∼30% by weight of co-polymer unit z is 30∼50% by weight of co-polymer unit; • 10-50% photopolymerizable oligomer; • 1-30% multifunctional monomer; • 1-20% cationic photopolymerization initiator, said cationic photopolymerization initiator is an onium salt; and- 1-20% infrared irradiation absorption dye selected from the group of: azo dyes, triarylamine dyes, oxonol dyes, cyanine dyes, merocyanine dyes, indocyanine dyes, phthalocyanine dyes, polythiophene dyes, pyrazoline azo dyes, oxazine dyes, naphthoquinone dyes, anthraquinone dyes, quinoneimine dyes, methine dyes and porphyrin dyes. • 30-70% water soluble thermal cross-linking resin, said water soluble thermal cross-linking resin is urethanized and unsaturated vinyl multi-component co-polymer A with weight-average molecular weight comprised between 5000 and 200000, having a chemical structure of: where R1 and R2 are hydrogen or methyl, R3 is CH2=C COOCH2CH2NCO-group, R4 is amide group, polyethoxylated ether group or pyrrolidone, where m is 40∼70% by weight of co-polymer unit, n is 10∼30% by weight of co-polymer unit, o is 10∼30% by weight of co-polymer unit, p is 10∼30% by weight of co-polymer unit; where R1 and R2 are hydrogen or methyl, R3 is CH2=C COOCH2CH2NCO-group, R4 is amide group, polyethoxylated ether group or pyrrolidone, where m is 40∼70% by weight of co-polymer unit, n is 10∼30% by weight of co-polymer unit, o is 10∼30% by weight of co-polymer unit, p is 10∼30% by weight of co-polymer unit; • 1-20% water soluble photo cross-linking or polymeric resin, said water soluble photo cross-linking or polymeric resin is sulfonic acid group containing and unsaturated and water soluble co-polymer B, having a chemical structure of: where R3 is CH2=C COOCH2CH2NCO-group, R5 and R6 are hydrogen or methyl, where x is 20∼40% by weight of co-polymer unit, y is 10∼30% by weight of co-polymer unit z is 30∼50% by weight of co-polymer unit; where R3 is CH2=C COOCH2CH2NCO-group, R5 and R6 are hydrogen or methyl, where x is 20∼40% by weight of co-polymer unit, y is 10∼30% by weight of co-polymer unit z is 30∼50% by weight of co-polymer unit; • 10-50% photopolymerizable oligomer; • 1-30% multifunctional monomer; • 1-20% cationic photopolymerization initiator, said cationic photopolymerization initiator is an onium salt; and- 1-20% infrared irradiation absorption dye selected from the group of: azo dyes, triarylamine dyes, oxonol dyes, cyanine dyes, merocyanine dyes, indocyanine dyes, phthalocyanine dyes, polythiophene dyes, pyrazoline azo dyes, oxazine dyes, naphthoquinone dyes, anthraquinone dyes, quinoneimine dyes, methine dyes and porphyrin dyes.