Abstract:In the smart city construction boom, put forward a reasonable construction of ability evaluation model, scientific classification and evaluation of the ability of smart city construction. from four main factors of smart city construction ability . building smart city construction ability index system, examples of smart city ward system clustering, select decision tree C4.5 algorithm to establish construction ability evaluation model, and verify that the model is scientific. It found that policies and regulations to improve rate, Internet penetration rate, R & D expenditure as a share of GDP is the most significant factor affecting the ability of gap of the smart city construction, according to the evaluation results, making policy recommendations to construct characteristic smart city.