[Purposes] This study aims to obtain modified emulsified asphalt micro-surfacing mixture with excellent skid resistance. [Methods] Through orthogonal experiment, the influence of aggregate gradation, modified emulsified asphalt, water and other factors on the performance of micro-surfacing mixture was explored. The influence of aggregate gradation on the skid resistance decay law of micro-surfacing mixture was further analyzed by simulating the rubbing effect of driving on pavement at road intersection with asphalt emulsion wet wheel abrasion tester. [Findings] Modified emulsified asphalt, water and gradation all had different effects on the performance of the mixture. When the content of modified emulsified asphalt and water was 14% and 10%, and the mineral aggregate gradation was 2, the micro-surfacing mixture was the optimal ratio. [Conclusions] The emulsified asphalt mixture modified by styrenic block copolymers (SBS) has excellent skid resistance and can be widely used in the maintenance of asphalt pavement.