PURPOSE: To obtain electric precipitator elements that can be handled as one assembly even when a plurality of them are used by constituting connecting side terminals and connected side terminals of a lot of feed terminals and simultaneously making the two opposite to each other in the parallel direction of each casing.

CONSTITUTION: A electric precipitator element E has dust collecting members 11 contained in a casing 10. Feed terminals 52, 62, 55, 56, 65, 66 are electrically connected to the dust collecting members 11 and simultaneously a part of them is electrically connected to a high voltage feed part V. Further, in one electrostatic precipitator, plural casings 10 are arranged in parallel in one direction for use. In the constitution, connecting side feed terminals 55, 65, 56, 66 and connected side feed terminals 52, 62 are constituted of feed terminals 52-66. And the connecting side feed terminals 55-66 and the connected side feed terminals 52, 62 are made opposite to each other in the parallel direction.