A thermal recording material, its manufacturing method, and the recording material is used in the

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PROBLEM TO BE SOLVED : To provide a thermosensitive recording material excellent in water resistance and plasticizer resistance.SOLUTION : A thermosensitive recording material includes vinyl alcohol based polymer containing monomer unit having a group shown by a following formula (1) satisfying the following formula (I). Here, Ris a hydrogen atom or a C1-5 alkyl group, Ris an alkoxyl group, an acyloxyl group, or a group shown by OM (M is a hydrogen atom, alkaline metals, or an anmonia group), Rand Rare independently a hydrogen atom or an alkyl group respectively, m is an interger of 0 to 2, n is an integer of 3 or more. 370≤P×S≤6, 000 (I). P : viscosity-average polymerization degree. S : a content (mol%) of the monomer unit.