The present invention relates to a method for producing polytrimethylene terephthalate (hereinafter referred to as PTT) bulky continuous filament (hereinafter referred to as BCF) and carpet.;To this end, the present invention uses a release nozzle that is properly designed for the polytrimethylene terephthalate spinning process in the production of BCF, by stretching in two stages at the time of stretching to improve the stability of the spinning process, steam jet method of It is characterized by expressing a high bulkiness using a texturing process.;The polytrimethylene terephthalate BCF prepared according to the present invention has the effect of reducing the production cost due to the improvement of the high crimp expression and the crimp uniformity using steam jet, the improvement of physical properties such as the compressive modulus, and the weight reduction per unit area. You can expect.;Polytrimethylene terephthalate, bulky continuous filament, steam jet, uniformity, compression modulus, bulkiness
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