The present invention discloses a method for monitoring the network quality, which comprises the steps of: prearranging series-connection monitoring at the network node equipment, arranging the successor action enabling with a lost series-connection or avoiding and/or enabling or avoiding the series-connection of each level, and doing series-connection monitoring by the network equipment with the prearranged content. The present invention also discloses a device for monitoring the network quality, which includes the following component: a monitoring control module which is used to prearrange the series-connection monitoring, arranging the successor action enabling with a lost series-connection or avoiding, and/or, enabling or avoiding the series-connection of each level, and doing series-connection monitoring with the prearranged content. The invention can increase the accuracy of monitoring the network quality.