According to the Maxwell equations and constitutive relations in chiral medium,the paper studies the dispersion characteristic of a symmetric slab waveguide with a chiral negative refractive medium. With the normalized frequency and propagation factor, dispersion equations expressed with normalized parameters are derived in a slab waveguide with a chiral negative refractive medium. Numerical results show that the chiral parameter has great influence on the dispersion characteristic of a slab waveguide. When...