The invention belongs to the technical field of aluminum foil calendering manufacturing, and discloses a high-strength material for flexible connection of a new energy power battery and a manufacturing method of the high-strength material. The material comprises the following components of, in percentage by mass, 0.20%-0.30% of Si, 0.40%-0.60% of Fe, 0.08%-0.12% of Cu, 1.05%-1.20% of Mn, smaller than or equal to 0.05% of Zn, smaller than or equal to 0.03% of Ti and the balance Al; and the technological process comprises the steps of smelting, cast rolling, rough rolling, intermediate homogenizing annealing, intermediate rolling trimming, finished product finish rolling, withdrawal and straightening cleaning, slitting, finished product annealing and the like. The product and the method havethe advantages of being high in strength, good in forming plasticity, good in model and surface end surface quality and good in flexible electric conduction effect, and the problem of poor conductivity of a battery pack caused by looseness and breakage of a fastener due to vibration in the running process of an automobile can be solved.