Provided is an exhaust gas treatment equipment for a marine diesel engine capable of providing high PM collecting rate and a PM burning process in the ship. The exhaust gas treatment equipment includes: a tubular collection unit composed of a discharge electrode for charging particulate matters contained in exhaust gas from the engine and a precipitation electrode for collecting the particulate matters charged; a PM-low-concentration exhaust gas delivery pipe and a PM-high-concentration exhaust gas delivery pipe; a PM-free scrubber provided in the PM-low-concentration exhaust gas delivery pipe; a precipitation means for separating and collecting the particulate matters detached from the tubular collection unit by using a cyclone for precipitation; a burning device for burning PM precipitated by the precipitation means; and a recirculation pipe for recirculating combustion exhaust gas generated in the burning device to the collection unit or an exhaust pipe on the upstream side of the collection unit.