A grape treatment and wine making process characterised by the steps of: cleaning a first container by means of a fluid mixed with ozone; placing the grapes in said first container in closed vats and/or buildings at controlled temperature; diffusing a fluid mixed with ozone within said vats and/or buildings at controlled temperature; cleaning said grapes placed in said first container by means of a fluid mixed with ozone; cleaning a press by means of a fluid mixed with ozone; pressing said grapes with said press to produce must; cleaning a second container by means of a fluid mixed with ozone; placing said must in said second container to produce fermented must; cleaning a third container by means of a fluid mixed with ozone; placing said fermented must (wine) in said third container.