The nickel-phosphorus alloy was deposited on carbon nanotube fibers (CNTFs) by an electrochemical deposition method. By comparing the electrocatalytic hydrogen evolution performance of carbon nanotube fibers supported nickel-phosphorus alloy (Ni-P/CNTFs) electrodes prepared under different cycles and different ratios of nickel-phosphorus in neutral electrolyte solution, it was found that when the ratio of nickel-phosphorus in the electrodeposited solution is 2∶1 and the cycle number is 50, the sample has the best electrocatalytic hydrogen evolution performance. It could achieve a current density of 10 mA?cm-2 at an overpotential of 138 mV, and the Tafel slope is 83 mV?dec-1, and it also shows good stability. Moreover, the sample could be bent while the catalytic performance remained constant, which expands its field of application.