This paper puts forward a mobile recommendersystem model based on collaborative filtering algorithm under the mobile circumstances. We aim at the insufficient degree in integration of the existing algorithm and the instant context, and design a circumstance oriented collaborative filtering recommendation system framework model based on the traditional collaborative filtering algorithm. We use MAE and F1 evaluation index to evaluate the commendation quality between our proposed model, pre-filteringmodel and the general context modeling. Through a series of experiments, it shows that the proposed scheme has the better performance in recommendation quality.