PROBLEM TO BE SOLVED: To provide a micro-relay provided with an isolation characteristic and having excellent sealing capability. SOLUTION: This micro-relay is provided with: a first fixed board having a first fixed contact and a fixed electrode; a second fixed board having a second fixed contact and disposed oppositely to the first fixed board; and a movable plate disposed between the first and second boards. The movable plate includes a frame part and a movable part mounted movably with respect to the frame part. The frame part is enclosed and jointed between the first and second fixed board. The movable part is provided with a movable electrode facing to the fixed electrode and a movable contact at a position corresponding to the first and second fixed contacts, and moves between the first and second fixed boards based on electrostatic attraction force generated between the movable electrode and the fixed electrode. COPYRIGHT: (C)2004,JPO