To provide a carburetor, simple in constitution, inexpensive, having good atomization performance, and improving starting/warm-up/ low-temperature acceleration of an engine.

An intake passage 2 of the carburetor is provided with a low speed fuel nozzle hole 10, a high speed fuel nozzle hole 11, and a low temperature fuel nozzle hole 13, and a passage 19 extended from a fuel chamber 4 is connected to the fuel nozzle hole. The base end part of a needle 24 is pressed in the deepest end part of the fuel nozzle hole 13 opened to the intake passage 2. A gap 17 is provided between the fuel nozzle hole 13 and the small-diameter part 14 at the tip of the needle 24 to be used as a fuel passage, and the tip part 18 of the needle 24 is projected into the inside of the intake passage 2.