The invention discloses a toughening-type polypropylene master batch formula which comprises the following components in percentage by weight: 40-60% of impact-resistant polypropylene copolymer, 20-30% of plastic, 4-8% of resin, 0.3-0.8% of toner, a right amount of polypropylene sample and a right amount of assistant. The master batch is prepared by the following steps: mixing the 40-60% of impact-resistant polypropylene copolymer, 20-30% of plastic, 4-8% of resin and 0.3-0.8% of toner for 1 minute, mixing with the polypropylene sample and assistant, and extruding the master batch mixture through an extruder. The master batch has favorable rigidity-toughness balance and heat resistance, can be widely used in construction materials, furniture, automobiles, electric appliances, electronic and electrical engineering and other industries, and can be used for preparing various profiles, tubes, films, sheets, boards, injection molding components and the like. Besides, the preparation method is simple, can shorten the molding processing time, and can also lower the energy consumption and the production cost, thereby having high practicality.