  The single production of fourth family sneutrino $\tilde{\nu}_{4}$ via
R-parity violating interactions in electron-positron collisions has been
investigated. We study the decays of $\tilde{\nu}_{4}$ into different flavor
dilepton $e^{\pm}\mu^{\mp}$ via R-parity violation. It is shown that R-parity
violating couplings $(\lambda_{411},\lambda_{412})$ down to 0.001 will be
reachable at future linear colliders which would provide better accuracy
comparing to the indirect measurements as complementary to the LHC results.
