This invention relates to a special hydrophilic and drain mode film base for biochips by providing a special hydrophilic and drain mode film base of a biochip having hydrophilic points in the same area and same size in a modified drain surface (thickness of the drain layer is 2-5mum) on a glass slide, silicon plate or other carriers, in which, shape, area, density and array arrangement can be decided according to the needs and the shape of the points are generally round, the film base has a substrate having a drain layer on the top surface and array hydrophilic points are distributed on the drain layer.