A gas turbine engine comprising a fuel supply device and a combustor including a pilot burner and a main burner; the fuel supply device comprising: a pilot fuel passage configured to supply the fuel to the pilot burner; a main fuel passage configured to supply the fuel to the main burner; a collecting fuel passage configured to supply the fuel to the pilot fuel passage and to the main fuel passage; and a fuel divider (66, 66A) configured to divide the fuel supplied from the collecting fuel passage to feed the fuel to the pilot fuel passage and to the main fuel passage; wherein the fuel divider (66, 66A) includes: a fuel entrance into which the fuel supplied from the collecting fuel passage is introduced; a pilot port connected to the pilot fuel passage; a main port connected to the main fuel passage; a pilot port needle valve element configured to adjust an opening degree of the pilot port; a main port needle valve element configured to open and close the main port; and a drive element (100, 203) configured to be actuated according to the fuel pressure at the fuel entrance to drive the pilot port needle valve element and the main port needle valve element; wherein when the fuel pressure at the fuel entrance is not higher than a predetermined value, the fuel is supplied only to the pilot fuel passage; and when the fuel pressure at the fuel entrance is higher than the predetermined value, the fuel is supplied to the pilot fuel passage and to the main fuel passage. a pilot fuel passage configured to supply the fuel to the pilot burner; a main fuel passage configured to supply the fuel to the main burner; a collecting fuel passage configured to supply the fuel to the pilot fuel passage and to the main fuel passage; and a fuel divider (66, 66A) configured to divide the fuel supplied from the collecting fuel passage to feed the fuel to the pilot fuel passage and to the main fuel passage; wherein the fuel divider (66, 66A) includes: a fuel entrance into which the fuel supplied from the collecting fuel passage is introduced; a pilot port connected to the pilot fuel passage; a main port connected to the main fuel passage; a pilot port needle valve element configured to adjust an opening degree of the pilot port; a main port needle valve element configured to open and close the main port; and a drive element (100, 203) configured to be actuated according to the fuel pressure at the fuel entrance to drive the pilot port needle valve element and the main port needle valve element; a fuel entrance into which the fuel supplied from the collecting fuel passage is introduced; a pilot port connected to the pilot fuel passage; a main port connected to the main fuel passage; a pilot port needle valve element configured to adjust an opening degree of the pilot port; a main port needle valve element configured to open and close the main port; and a drive element (100, 203) configured to be actuated according to the fuel pressure at the fuel entrance to drive the pilot port needle valve element and the main port needle valve element; wherein when the fuel pressure at the fuel entrance is not higher than a predetermined value, the fuel is supplied only to the pilot fuel passage; and when the fuel pressure at the fuel entrance is higher than the predetermined value, the fuel is supplied to the pilot fuel passage and to the main fuel passage.