The invention relates to an analysis method and an analysis system for supervision logs. The analysis method comprises the following steps: acquiring a supervision log text to be analyzed; performingword segmentation to obtain a segmented word set; searching evaluation words from the word segmentation set; determining the comprehensive emotion degree of the supervision log text; and when the comprehensive emotion degree exceeds a preset threshold, sending a supervision log text. Searching is carried out through word segmentation and evaluation words of a supervision log text; determining thecomprehensive emotion degree of the supervision log text; obtaining the emotion of a writer of the supervision log text to the supervision condition from the text through a technical means; manual intervention and human resource investment are not needed; compared with the prior art, the labor cost and invalid work are saved, the analysis and processing efficiency of the supervision log text is improved, the overall situation evaluation of supervision personnel on the construction site on that day is reflected through an emotion analysis technology, key follow-up of the construction site withstrong negative emotion is facilitated, and therefore precautions are facilitated, and malignant events and even safety events are avoided.