A leg type mobile robot (R) including an body (R2), legs (R1) each connected to the body (R2) via a first joint (12, 13), and foots (R17) each connected to an end part of the leg part (R1) via a second joint (15, 16), the foot (17) including a foot portion (61) having a lower end part having a ground area (64, 66) grounded on a floor surface, the foot portion (61) including a plate spring part (62) supporting empty weight while bending at the time of being grounded.