"Double violation" refers to other illegal acts without the approval of the administrative departments of housing, construction, land and planning, in violation of the overall land use planning, urban and rural planning and various professional planning, unauthorized occupation and purchase of land, destruction of cultivated land, forest land, rivers and water conservancy facilities, change of land use, illegal construction and unauthorized construction without the approval of the planning content.

Second, what are the types of "double violation"?

"Double violation" includes illegal land use and illegal construction.