To provide a pigment dispersion liquid which provides an ink capable of recording an image having high fixability and fastness such as scratch resistance and excellent quality stably for a long time in any conditions. A pigment dispersion liquid mainly containing a polymer dispersant, a coloring material and water, in which the polymer dispersant is formed of at least a hydrophobic unit and a hydrophilic unit, the hydrophobic unit having a block portion formed of at least one hydrophobic monomer, the coloring material is formed of a pigment having on its surface an acid form anionic group, and the pigment dispersion liquid further contains a basic compound capable of forming a complex with an alkaline metal.