To provide a method for surface treatment of a textile product suitable for higher-speed and continuous treatment by which the treatment can stably be carried out in a simple process.

A solid dielectric is installed on at least one of opposite surfaces of opposing electrodes and a textile product is arranged between one of the opposing electrodes and the solid dielectric or between the mutual solid dielectrics to apply a pulse electric field across the opposing electrodes. In this case, the voltage rise time in the pulse electric field is regulated to ≤100 μs and the electric field intensity is regulated to 1-100 kV/cm. Further, the frequency is regulated to 0.5-100 kHz.