A laser recording thermally sensitive recording medium comprising, at least a photo absorbing material which absorbs laser ray and covert the laser ray to heat, colorless or pale colored basic leuco dye and organic color developing agent on a substrate as main components, wherein said photo absorbing material is a compound represented by general formula (1), wherein, n indicates an integer of from 1 to 4, and structural formula of Xn, Yn and Zn− are indicated in Table 1. TABLE 1 n = 1n = 2 XnN(C2H5)2N(C2H5)2 YnN(C2H5)2N(C2H5)2 Zn− n = 3n = 4 XnN(CH3)2N(C2H5)2 YnHOCH3 Zn−CF3SO3−CF3SO3−