A semiconductor module is provided, where a coolant circulation portion of a cooling apparatus has a first coolant flow channel and a second coolant flow channel arranged so as to sandwich therebetween a fin region in which a cooling fin is provided, and each having two ends in a longitudinal direction, a casing portion of the cooling apparatus includes a first opening provided on an end side corresponding to a first end of the first coolant flow channel and a second opening provided on an end side corresponding to a second end of the second coolant flow channel, the second end and the first end are arranged on the same side of the casing portion, and the first coolant flow channel and the second coolant flow channel are each at least partly provided below the cooling fin.