Driven by the market economy, the city’s infrastructure has been continuously improved, and the living standards of the people have been continuously improved. The need for the integrated development of public art and urban environmental design has become one of the important tasks in the entire urban construction work. However, in the integrated development, public art and urban environment, as two subjects, have different development histories and complex influencing factors. Combining this information for effective analysis is a computationally and processing intensive task. This paper uses the data fusion method in wireless sensors to study the fusion development of public art and urban environment design and understand the historical development and various characteristics of public art and urban environment design. And we apply it in fusion analysis experiments, use wireless sensors for information collection, use data fusion methods for analysis, and compare with traditional methods. The experimental results show that the wireless sensor data fusion method is used in the research of the fusion development of public art and urban environment design. The average value of associated fusion degree reaches 84.08% and the average value of balanced fusion degree reaches 80.60%, which has certain effectiveness. Popularizing it in the current stage of urban construction can highlight the city’s personality and style and enhance the city’s cultural taste and modern cultural atmosphere.