A muscle electrostimulation device 1 includes: a main body 10； a power source 20 stored in the main body 10； an electrode unit 30 that receives power from the power source 30； a controller 40 that controls the supply of power to the electrode unit 30； and an operation unit 50 that changes a control mode of the controller 40. The electrode unit 30 includes a first electrode group 31 and a second electrode group 32. The first electrode group 31 extends from the main body 10 so as to be disposed on a right hand side X1 of a person 2 with respect to a center line 10a of the main body 10. The second electrode group 32 extends from the main body 10 so as to be disposed on a left hand side X2 of the person 2 with respect to the center line 10a when the device is attached to the abdomen 3. The first electrode group 31 and the second electrode group 32 can be electronically connected via the person 2, and the first electrode group 31 and the second electrode group 32 include four or more electrodes in total.
