PROBLEM TO BE SOLVED: To provide a green house-heating apparatus which enables the unemployment of an electric source, the highly efficient heating of the green house and the supply of carbon dioxide. SOLUTION: This green house-heating apparatus is characterized by building a combustor 32 for burning a gas fuel as a heat source 31 for directly heating the green house 30, disposing the exhaust vent 33 of the combustor 32 in the green house 30, and disposing a combustion air intake 34 at a place 35 outside the green house. Thereby, the green house-heating apparatus which enables the unemployment of the electric source, the highly efficient heating of the green house 30 and the supply of carbon dioxide can be realized.