The invention discloses an electromagnetic pump especially a source-free direct current electromagnetic pump, which is characterized by the following: setting pump body (2) as L shape structure; arranging negative pole at L angle position of the pump body (2); arranging magnetic conduction plate (4) on the two laterals of the L angle in the pump body (2); connecting the two magnetic conduction plates to N pole and S pole of electromagnet (6) separately; constructing the negative pole 5 and the magnetic conduction plate (4) as component of pump groove; nesting energizing coil (8) on the electromagnet (6); connecting the negative (5) and the energizing coil (8) to site control pod. This invention possesses simple structure, liable work and small volume.