本研究試圖分析多重弱勢的動態累積特性。研究目的爲：描繪弱勢累積的軌跡類型、探討弱勢累積導致社會排除的關鍵性弱勢項目、以及分析弱勢累積的動態特性。藉由個案研究方法，本研究對研究個案之家庭事件及弱勢情況予以重建，再進行弱勢累積的軌跡的描繪及分析。研究發現包括：1.弱勢累積具有網狀的發展特性。2.「變態滋生」是弱勢累積的重要動態特性，即弱勢會引發新的弱勢項及發生累積，而新弱勢在滋生時也發生「樣態」變化，包括受害者、弱勢項、及型態（弱勢／事件）三種樣態的變化。3.從研究個案中歸納出「債務型」、「藥酒癮」及「遺棄型」三種弱勢累積軌跡，並發現暴力、所得不足及心理疾病是導致社會排除過程中的關鍵性弱勢項。最後，作者依據研究發現進行理論及政策討論。

This research attempts to explore the dynamic characteristics of multi-disadvantage cumulation in the social exclusion process. The author illustrated the trajectories of how disadvantages cumulated to clarify the dynamic features and to understand how the dynamic features had emerged and how they extended. The main findings are as bellow. Firstly, the cumulation characteristic could be better described as a 'web-like' pattern rather than a linear one. Secondly, the multi-disadvantage cumulation can be understood as a 'transformative breeding' process which can be observed through three attributes: the transition among characteristics, the transition among social disadvantage dimensions, and the shifting process among the sufferers. Thirdly, there are three types of multi-disadvantaged cumulative trajectories to be recognized: the 'debt-oriented', 'drug/alcohol driven' and 'abandonment-extended' trajectories. In addition to the main findings, the research found that violence, insufficient income and mental illness are the core/transitional disadvantages leading to social exclusion.