Anomalous tremors were widely recorded by seismographs, gravimeters and tiltmeters in the National Digital Seismograph Network of China (NDSN) about 40 hours before the 2008 M_S 8.0 Wenchuan earthquake. However, a violent typhoon, named Rammasun, was taken place over the western Pacific before the earthquake. Similarly, anomalous tremors also appeared about 60 hours before the 2001 M_S8.1 Kunlunshan earthquake, while a violent typhoon LingLing was produced. In this paper, we study if these anomalous tremors before the great earthquakes are relevant to the typhoon events. Our results show that many anomalous tremors in the inner-land appeared during typhoon and their amplitudes depend on the distance from the track of typhoon and the strength of typhoon. A violent typhoon close to the coast of China can cause strong microseisms which can be widely observed in the inner-land of China, but a typhoon far from the coast of China cannot do that. The nearest distance from the track of LingLing to the coast of China is about 700 km, and that for Rammasun is about 1300 km. Our investigation shows that a typhoon which has a similar track and strength as that of LingLing can surely cause significant anomalous tremor in the inner-land of China, but it is contrary for a typhoon similar to Rammasun. Anomalous tremors recorded by many seismographs in NDSN before the Kunlunshan earthquake are most likely caused by LingLing, however, strong anomalous tremors in Xinjiang region have low frequencies. We suggest that the anomalous tremors before the Wenchuan earthquake are less likely to be entirely attributed to Rammasun. It is worthwhile to make further study of the cause and mechanism of anomalous tremors before the Wenchuan earthquake.