In order to improve the frost resistance and dry shrinkage resistance of cement stabilized cold recycling mixture in alpine region, and improve the application of cement stable cold recycling technology in municipal roads, the low temperature frost resistance, dry shrinkage cracking resistance, tensile and compressive strength properties of polypropylene fiber for cement stabilized cold recycled mixture were studied. It is concluded that polypropylene fiber plays a reinforcing role in cement stabilized macadam. This improves the strength, toughness and crack resistance of the cement stabilized concrete matrix. Comprehensive analysis shows that under the standard curing conditions, the optimal content of polypropylene fiber in cement stabilized recycled mixture formed by vibration molding method is 0.9 kg/m³, and the optimal fiber length is 12 mm. Combined with the annual climate of Baotou and other alpine regions, the representative different curing conditions were designed to study the influence of high cold area on the performance of polypropylene fiber cement stabilized cold recycled mixture. It is concluded that the addition of polypropylene fiber can reduce 0.5% of the cement consumption and the polypropylene fiber cement can stabilize the cold recycling performance when the compressive strength, tensile strength and frost resistance of the mixture are ensured. The problems of insufficient strength and cracking of cement stabilized cold recycled base which are resulted from low temperature, low humidity and large temperature difference between day and night in high and cold regions are solved. The construction time in winter is prolonged.