An object of the present invention is to provide a hydrophilic coating film or an aluminum plate having a hydrophilic coating film, and a heat exchanger. The aluminum plate provided with the hydrophilic coating film according to the present invention is characterized in that a coating film containing a boron compound and a hydrophilic polymer and having a SiO 2 content of 49 percent or less and a surface roughness Rz of 1.5 micro m or less is provided on one or both surfaces of a substrate made of aluminum or an aluminum alloy. The aluminum sheet having the hydrophilic film according to the present invention contains a boron compound and a hydrophilic polymer, has an SiO 2 content of 49 percent or less, A film having a surface roughness Rz of 1.5 micro m or less is provided on one or both surfaces of a substrate made of aluminum...

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