The toroidal rotation modulation and momentum transport have been investigated in the J-TEXT tokamak using a modulated electrode biasing (EB) along with measurements of the toroidal rotation (Vϕ) by a spectrometer and a Langmuir-Mach probe array. The amplitude Av and phase delay ϕv (relative to the phase of the biasing current, IEB) of the rotation modulation are extracted through sine-fitting approaches. It is found that the Av increases with increasing IEB and the ϕv becomes larger when the modulation frequency increases. It has been estimated that the momentum transport time across a radial range from r/a ∼ 0.9 to 0.65 is about 10 ms, shorter than the half of modulation period (∼30 ms). Using the perturbation analysis technique, the toroidal momentum transport coefficients, including momentum diffusivity χϕ and convective velocity Vconv, have been calculated and an inward pinch effect has been observed. In addition, the impact of the EB on the ion temperature and intrinsic rotation and the toroidal rotation difference between impurity and main ions are analyzed and discussed.