The invention provides a functional stretch film with hot seal property, and in particular relates to a hot-seal unidirectional or bidirectional stretch film, which has the hot seal strength of more than or equal to 3N/15mm and the thickness of more than or equal to 0.010mm and less than or equal to 0.150mm and which is formed by a single layer, two layers or more than two layers of polyolefine resin by an auxiliary co-mixing process and a blow molding, flow casting extrusion stretching or co-extrusion stretching process. The functional stretch film solves the technical problem that the effective hot seal cannot be achieved on an occasion with higher hot-seal requirements due to difficult obtaining of hot seal or serious hot-seal performance reduction when the polyolefin film is stretched. The product has the advantages of high mechanical strength, excellent optical property, obviously high water vapor resistance, anti-puncturing property and extremely good seal grease resistance and anti-pollution hot seal property, and can be widely applied to bags and automatic filling type sealed packages of foods, articles of daily use, cosmetics, chemicals, pesticides, military products and medical products as well as intaglio printing films and flexographic printing films, particularly various hot-seal materials under the dry-type lamination, wet-type lamination and extrusion lamination processing conditions.