The present invention relates to a Thermococcus onnurinus 156T-LD2437 strain and a continuous culture method for producing biohydrogen using the same. The Thermococcus onnurinus 156T-LD2437 strain of the present invention enables stable cell growth even under continuous culture conditions and can produce hydrogen gas with high efficiency, so the Thermococcus onnurinus 156T-LD2437 strain of the present invention is applied to a large-scale production process. Thus, there is an advantage in that hydrogen gas can be efficiently produced. In addition, the Thermococcus onnurinus 156T-LD2437 strain of the present invention enables stable cell growth and production of bio-hydrogen gas even under high salinity conditions with a salinity of 5% to 7%, so an additional process facility for removing various germs can be omitted. There is this. In addition, the Thermococcus onnurinus 156T-LD2437 strain of the present invention has an advantage in that foam generation is reduced during continuous culture, so that the application of additional equipment for homogenizing a medium can be omitted.
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