The invention discloses a method for reducing the offline rate of the wireless network. The method comprises the steps that (1) a client with a wireless network card is used to detect the signal weakness, a wireless router is paced at the position where signals are strongest, and signals are avoided from penetrating walls as possible; (2) scanning is carried out by using software Network Stumbler to detect other wireless signal channels nearby, and a channel of the wireless router is changed into one different from the channels nearby to reduce mutual conflicts; (3) an enhanced omnidirectional antenna is mounted on the wireless router to satisfy office or household areas whose coverage area is wide but density is not high; and (4) a directed signal enhancing device is mounted on the antenna of the wireless router, so that the signal penetrating performance in a specific direction is enhanced, attenuation is reduced, and the signal of the specific direction is improved. The method employs different levels of measures, the signal coverage area of wireless equipment is increased, the signal orientation intensity of the wireless equipment is improved, and the offline rate of the wireless network is greatly reduced.