A triple-band printed micro-strip antenna fed by coplanar waveguide (CPW) is designed based on notched structure. The character of multi-band is achieved by adding slots to the radiation patch and micro-strip of planar monopole antenna. The antenna model is simulated and optimized by electromagnetism simulation software HFSS12 and a prototype is manufactured according to the result of simulation. The result of measurement fits well with that of simulation. The antenna can work on the bands of 1.85~2.53 GHZ， 3.14~4.38 GHz and 4.87~5.93 GHz (S11＜-10 dB)，which cover the bands of Bluetooth (2.4~2.48 GHz)， WiMAX (3.4~3.6 GHz) and WLAN (5.15~5.825 GHz). The antenna’s impendence and gain are good enough to meet the requirement of wireless communication in its working bands.