To provide an electromagnetic pump improved in operation of a vibrator.

In this electromagnetic pump, recessed chambers 60 opened to suction and compression chambers 22 sides are provided on facing side walls 25 of the suction and compression chambers 22 of a main body case 10 provided with the suction and compression chambers 22 having a diaphragm 40 on one side and a core having chamber 12. A bearing 70 provided on an opening part of the space chamber 60 and for bearing the tip of a shaft 57 of a vibrator 50 is provided, and grooves 71 (a communication passage) for communication the space chamber 60 with the suction and compression chambers 22 are provided. Thereby, a reciprocating motion of the vibrator 50 can be improved.