With the development of science and technology, radio observatories gradually tend to be automated, and the electromagnetic environment of radio observatories becomes more complicated with the introduction of various electronic equipments. How to effectively identify and count the interference signal in a complicated spectrum is an urgent problem to be solved in the radio observatories at present. Therefore, a method of identification and statistics of the interference signals of broadband spectrum sequences is proposed in this paper. Firstly, signal-to-noise separation was performed for each set of wideband spectrum, and signals were identified in the spectrum. Then, the template database was established for the first group of wideband spectrum signal identification results and signal features. The correlation analysis between the signal identification results of each set of spectrum and the corresponding frequency signals in the template database was carried out. According to the correlation analysis results, the number of signals was counted, and the template database was updated. Thus, the signal identification and signal statistics of wideband spectrum interference were realized. According to the measured spectrum of QTT (QiTai Radio Telescope), the interference signal can be identified and counted by this method, and the trend of interference signal varied with time and direction can be calculated.