To provide a substrate storage member capable of miniaturizing a device installed with a flexible substrate, and a liquid delivery device.

This substrate storage member 64 includes a base part 170, the first component support part 172 formed projected from the base part 170, and having the first support face 190a for supporting the first driver IC together with one part of the first flexible substrate, and the second component support part 174 formed projected from the base part 170 along the same direction same to that of the first component support part 172, formed separated from the first component support part 172, and having the second support face 194a for supporting the second driver IC together with one part of the second flexible substrate, and a storage space J for storing the other parts of the first flexible substrate F1 and the second flexible substrate F2 is constituted in an area in a base part 170 side of the first support face 190a and the second support face 194a between the first component support part 172 and the second component support part 174.