Abstract: A combinative fence assembly includes two posts (1), a plurality of heighteners (2) and a rail (3). Each of the posts (1) has a combining side (10). The two combining sides (10) of the two posts are arranged at an interval and face each other. Each combining side (10) is formed with an inward trough. The heighteners (2) are separately embedded in the troughs (11). The rail (3) is connected between the two combining sides (10) of the two posts (1). Two ends of each rail (3) are separately embedded in the two troughs (11) of the two posts (1) and superposed on at least one of the heighteners (2). Thereby, a fence can be constructed depending on actual requirements.