隨著國內營造業分包制度盛行,分包商的報價行為將可能直接影響私營部門的專案成本控制。本研究的目標是以巨量數據為基礎,對分包商的報價行為進行因子分析及關聯規則。經過文獻回顧與專家訪談,探討了應用於數據蒐集的報價行為特徵,包含典型建設項目的9個分項工程及6個報價行為特徵。通過任意抽樣,蒐集到近五年來自私營部門的報價資料共10433筆數據。其工程專案規模從4000萬到10億新台幣不等,專案位置主要位於台灣北部。每個建築分項分別有2到5個使用Apriori關聯分析得到的規則。本研究之研究成果有助於從業者改進採購策略、預算控制效率和報價的實際議價範圍。;Subcontractors’ quotation behaviors directly influence project costs control for private sectors. The research objective is to massively collect data as the base in order to conduct factor analysis and association rules for subcontractors’ quotation behaviors. The literature review and expert interview explore quotation behavior features used for the data collection, containing data from 9 engineering major categories for typical construction projects and 6 quotation behavior features. A total of 10433 quotations from private sectors are collected in recent 5 years at convenient sampling. Their project sizes range from 40 million to 1 billion NTD for buildings mainly located in the northern Taiwan. There are 2 to 5 association rules using Apriori for each engineering category, respectively. The findings contribute the practitioners with improvement for procurement strategy, efficiency for budget control, and practical discount range for quotations.