A wiper blade is disclosed in the invention having a spoiler-integrated lever assembly. The lever assembly of the wiper blade includes a connector seat to which a connector assembly for connection to a wiper arm is detachably connected. The connector assembly is detachably joined to the connector seat by inserting an insertion protrusion of the connector assembly to an insertion slot of the connector seat and then rotating the connector assembly towards the connector seat and thus bringing snap protrusions of the connector seat into snap-engagement with snap slots of the connector assembly.