Noble metal nanoparticles have been a source of immense interest due to their novel properties and the uniqueness in properties due to high aspect ratio and quantum size effect resulting from their reduced size. In this paper, silver nanowires with an uniform diameter of 50nm were simply and successfully synthesized by solvothermal method using ethylene glycol as reducer in the presence of anodic alumina oxide (AAO) template. The experiment process is repeatable and the condition is moderate. The results of the field emission scanning electron microscope (FE-SEM) and the transmission electron microscope (TEM) show that there are more Ag nanowires with high aspect ratio produced on the surface of AAO and they are formed by many short nanowires connecting with each other from beginning to end. X-ray diffraction (XRD) and High-resolution transmission electron microscope (HRTEM) reveal that the prepared product is made of pure silver with face centered cubic structure. The optical properties were characterized by UV–Vis spectroscopy. The results reveal that Ag nanowires have a strong absorption band at about 378nm and 715nm which can be attributed to the transverse surface plasmon response(SPR) and the longitudinal surface plasmon response of the long silver nanowires.