Method of chaos controlled by phase-shift and its physical model are presented for dual-ring single erbium-doped fiber lasers. The maximum Lyapunov exponent is numerically calculated to analyze the effect of the coupler′s coupling coefficient on kinetic behavior from bifurcation into chaos in the laser. The phase-shift controller is explained by controlling external-modulation-voltage of electro-optical phase-modulator. The method can adjust the optical field phase to control the polarization-coupling effect to control laser chaos kinetic behavior. Single-phase-shift can control real-time dynamically effectively laser chaos into stable states and periodic states. Dual-phase-shift can also control real-time dynamically effectively laser chaos into stable states and periodic states by adjusting flexibly phase shifts of two phase-shift controllers. And it can produce a lot of laser kinetic phenomena.