The present invention provides a unilateral chewing monitoring apparatus and a method thereof, wherein the unilateral chewing monitoring apparatus comprises: a first module for acquiring continuous left image frames generated by a left masticatory muscle for a period of time； a second module for acquiring continuous right image frames generated by the right masticatory muscle in the time period； a processing module for receiving the left image frame of the first module and the right image frame of the second module. The processing module obtains a left side change value of the left image frame according to the continuous left image frames, and obtains a right side change value of the right image frame according to the continuous right image frames, and the processing module at least determines whether it is an unilateral chewing in the time period according to the result of comparison between the change value of the left image frame and the change value of the right image frame. The present invention can determine whether to chew on one side. Thus, it is possible to automatically monitor whether unilateral chewing is performed.本發明提供了單邊咀嚼監測設備及其方法，其中的單邊咀嚼監測設備包括：一第一模組，第一模組獲取一時間段內左側咀嚼肌產生的連續的左側圖像框；一第二模組，第二模組獲取時間段內右側咀嚼肌產生的連續的右側圖像框；一處理器，處理器接收第一模組的左側圖像框和第二模組的右側圖像框；處理器根據連續的左側圖像框得到一左側圖像框的左側變化值，根據連續的右側圖像框得到一右側圖像框的右側變化值，處理器至少根據一左側圖像框的變化值和一右側圖像框的變化值比較的結果，確定時間段內是否為單側咀嚼。本發明能夠判定是否為單側咀嚼。從而，可以自動監測是否進行單側咀嚼。
