The invention provides a V-shaped air floating filter with a deslagging function, which relates to a water conditioning structure for a water treatment plant, in particular to the V-shaped air floating filter. The V-shaped air floating filter aims to solve the problems of the existing air floating filter that the hydraulic load of the filter is not easily matched with higher hydraulic load of theair floating filter, dropped residues in a backwashing scum layer can not be thoroughly removed, and the phenomena of spilling materials or mixing filter materials occur on a filter material layer. In the invention, main bodies of four V-shaped air floating filters are symmetrically arranged at the two sides of an influent water distribution groove; the upper side of each filter is separated intoan air floating contact area and an air floating separation area by a partition wall; each filter is sequentially provided with an air-water chamber, a filter plate support bracket, a filter plate, along-handled filtering head, a gravel supporting layer and a quartz sand homogeneous filter material from bottom to top; and a dump tank is arranged on a side wall opposite to the partition wall, a sediment scraper is connected with the side wall of the filter by a track, and a microbubble generating device is connected with a main delivery pipe for dissolved water in gas. The V-shaped air floating filter is especially applicable to upgrading old water plants adopting the V-shaped filter.