A flip-top washing device for vegetables and fruits has a housing assembly, a cover assembly pivotally connected to the housing assembly, a driving assembly mounted on the cover assembly, a washing basket mounted in the housing assembly, and an agitating panel assembly mounted on and connected with the washing basket. With multiple driving blocks of a driving member on the cover assembly and multiple connecting blocks on the agitating panel assembly and with an inclined surface and an vertical surface of each of the driving and connecting blocks, the driving member is able to be securely connected with the agitating panel assembly when closing the cover assembly onto the housing assembly. As the agitating panel assembly and the washing basket rotate, water inside the housing assembly is, strongly agitated so as to wash the vegetables and the fruits in the housing assembly.