This cold-rolled steel sheet for enameling contains 2*102 to 1*104 per mm2 inclusive of Fe-Mn-Nb complex oxides having a diameter of 0.2-10 microns inclusive and having predetermined chemical components, the fatigue limit/tensile strength ratio, after a 10% tensile strain is imparted and heat treatment has been carried out at a heating temperature of 830 DEG C and a holding time of 5 minutes, exceeds 0.42, a gap is formed between a structure and the Fe-Mn-Nb complex oxide, the circle equivalent diameter of the gap being 0.1-0.6 microns, and when the gap is approximated as a triangle and the long side of the triangle is the bottom side, the value of subtracting the height from the length of the bottom side is 1.0-15.