The invention discloses a high-strength cold-rolled steel strip for enamel, and a preparation method thereof. The steel strip comprises the following chemical components in percentage by weight: 0.008%-0.02% of C, not greater than 0.020% of Si, 0.08%-0.18% of Mn, not greater than 0.015% of P, not greater than 0.010% of S, 0.015%-0.055% of Al, 0.12%-0.15% of Ti and 0.002%-0.005% of N, wherein the content Ti-(4*C+3.43*N+1.5*S) of excessive titanium in steel is not less than 0.05%, and the balance is Fe and inevitable inclusions. The preparation method thereof comprises the following steps: 1) preparing a steel billet; 2) reheating the steel billet in the step 1) at a temperature of 1200 DEG C and above; 3) carrying out rough rolling and finish rolling on the reheated steel billet; 4) carrying out laminar flow cooling on the rolled product after the finish rolling, and then reeling the hot-rolled steel plate at a reeling temperature of 750-800 DEG C; 5) cooling the reeled rolled product to reach room temperature, and carrying out cold rolling on the rolled product at a reduction rate of 60%-90%; and 6) after the cold rolling, carrying out cover annealing. The steel strip is high in fish-scaling resistance, strength and formability.