Abstract: For the sake of providing design insights into the synthesis of controller reconfiguration for reconfigurable systems,control reconfigurability of linearized systems is analyzed.Oriented to control systems,five reconfiguration goals are identified,that is,stabilization goal,setpoint recovery weak reconfiguration goal,trajectory recovery strong reconfiguration goal,state restoration direct reconfiguration goal and fault-masking goal.According to the strength of control requirements,reconfigurability of stabilization,weak,strong,and direct goals via the fault-masking one for the closed-loop linear control system are presented respectively.With regard to the stabilization goal,controllability and observability structural properties are mainly considered,and reconfigurability conditions are given in the form of rank conditions for others.Reconfigurability analysis is illustrated by a linear multi-input multi-output(MIMO) system,validating the achieved reconfiguration conditions.