Tin-plated plate for milk powder can and preparation method of tin-plated plate

The invention relates to the technical field of steel preparation, in particular to a tin plate for a milk powder can and a preparation method thereof. The method comprises the steps that under the condition of a first set temperature, a hot-rolled plate with set chemical components is coiled, and a hot-rolled coil is obtained; the hot-rolled coil is subjected to acid pickling and then cold rolling, and a cold-rolled coil is obtained; under the condition of a second set temperature, cover annealing is conducted on the cold-rolled coil, and then flattening is conducted; and the leveled cold-rolled coil is tinned, and the tinned plate is obtained. The prepared tin-plated plate for the milk powder can is stable in surface quality, the performance of a finished product meets the can making requirement, and compared with a tin-plated plate for the milk powder can prepared through an existing continuous annealing technology, the tin-plated plate for the milk powder can is lower in cost. 本申请涉及钢材制备技术领域，尤其涉及一种奶粉罐用镀锡板及