Selecting the correct equipment is a multifaceted cost and benefit evaluation process due to the complexity of today’s construction projects and lack of considerations of all factors. Based on the analysis of traditional influence factors on the selection of construction equipments, carbon emission constraints were introduced to facilitate green construction. These factors were divided into three categories, which are certain factors, soft factors and carbon emission constraints, based on their own characteristics. By the classification of the factors, their impact on the selection of the construction equipments was studied in detail, especially the carbon emission constraints was investigated from three aspects: relationship between the emissions of CO2 and fuel consumption, standard and regulations of CO2 and carbon tax. The purpose of this paper is to find the main influence factors and provide a basic theoretical reference to the selection of construction equipments for decision-makers.