To provide an air heating type evaporator for improving the performance of an evaporator by forcedly melting ice and frost, etc., accumulated in a pan.

In an air heating type evaporator installed in the lower part of an evaporator main body 100 for gasifying liquefied gas and equipped with a water-reservoired pan 101 for receiving falling matter such as ice and frost caused in the body 100 when gasifying liquefied gas, a solar heat collector 200 is connected to the pan 101 via pipings 61 and 62 to increase water temperature by naturally or forcedly circulating water reservoired in the pan 101 through the collector 200.