The fast tunability and reconfigurability are essential for a silicon photonic filter for various application scenarios, such as an optical filter, time delay, and wavelength division multiplexing.In this work, we propose a reconfigurable filter based on a self-coupled micro-ring resonator combined with three optical switches. By controlling the electrodes, the proposed component can be reconfigured into five different structures, including the optical switch, non-balanced Mach-Zehnder Interferometer(MZI) filter, dual-ring-coupled MZI filter, micro-ring resonator filter with a double injection, and a self-coupled micro-ring resonator assisted MZI filter.Simulations have been performed based on the transmission matrix of the proposed filter. Based on the simulation results, the reconfigured dual-ring-coupled MZI filter has the capability of switching from a notch filter to a bandpass filter with an extinction ratio larger than 35 dB. The micro-ring resonator filter with double injection can be switched between two different FSRs, and the frequency tuning range is approximately 18 GHz. Compared tonumerous integrated single-function optical filters, the proposed structure has much higher flexibility and reconfigurability, and has the potential to be applied in integrated optical signal processing and microwave photonic systems.