An exhaust gas treatment system for a diesel engine, comprising: a low temperature heater arranged downstream of an exhaust pipe of the diesel engine; and a particulate filter connected to the low temperature heater and configured to capture particulate matters from engine exhaust; characterized in that the low temperature heater comprises: a tubular shell, having an inlet end and an outlet end, and the inlet end being in communication with the exhaust pipe of the diesel engine; an ignition portion arranged on a sidewall of the shell near the inlet end, and an oil inlet being arranged at a center of the ignition portion; an ignition cylinder connected to the ignition portion and in communication with the ignition portion, the ignition cylinder having an open end and a closed end, the closed end being near the inlet end of the tubular shell and the open end being near the outlet end of the tubular shell; and an air intake pipe which passes through the tubular shell and a sidewall of the ignition cylinder and enters the ignition cylinder, and wherein the intake pipe has a first air outlet and a second air outlet, the first air outlet is directly inside the ignition cylinder, the second air outlet is in communication with the ignition portion, and the ignition portion is located between the first air outlet and the closed end; wherein the first air outlet is inserted into the ignition cylinder in an eccentric manner, and the eccentric manner refers to that a center line of the first air outlet is not aligned with a center line of the ignition cylinder, but deviates from the center line of the ignition cylinder by a certain distance. a low temperature heater arranged downstream of an exhaust pipe of the diesel engine; and a particulate filter connected to the low temperature heater and configured to capture particulate matters from engine exhaust; characterized in that the low temperature heater comprises: a tubular shell, having an inlet end and an outlet end, and the inlet end being in communication with the exhaust pipe of the diesel engine; an ignition portion arranged on a sidewall of the shell near the inlet end, and an oil inlet being arranged at a center of the ignition portion; an ignition cylinder connected to the ignition portion and in communication with the ignition portion, the ignition cylinder having an open end and a closed end, the closed end being near the inlet end of the tubular shell and the open end being near the outlet end of the tubular shell; and an air intake pipe which passes through the tubular shell and a sidewall of the ignition cylinder and enters the ignition cylinder, and wherein the intake pipe has a first air outlet and a second air outlet, the first air outlet is directly inside the ignition cylinder, the second air outlet is in communication with the ignition portion, and the ignition portion is located between the first air outlet and the closed end; wherein the first air outlet is inserted into the ignition cylinder in an eccentric manner, and the eccentric manner refers to that a center line of the first air outlet is not aligned with a center line of the ignition cylinder, but deviates from the center line of the ignition cylinder by a certain distance. a tubular shell, having an inlet end and an outlet end, and the inlet end being in communication with the exhaust pipe of the diesel engine; an ignition portion arranged on a sidewall of the shell near the inlet end, and an oil inlet being arranged at a center of the ignition portion; an ignition cylinder connected to the ignition portion and in communication with the ignition portion, the ignition cylinder having an open end and a closed end, the closed end being near the inlet end of the tubular shell and the open end being near the outlet end of the tubular shell; and an air intake pipe which passes through the tubular shell and a sidewall of the ignition cylinder and enters the ignition cylinder, and wherein the intake pipe has a first air outlet and a second air outlet, the first air outlet is directly inside the ignition cylinder, the second air outlet is in communication with the ignition portion, and the ignition portion is located between the first air outlet and the closed end; wherein the first air outlet is inserted into the ignition cylinder in an eccentric manner, and the eccentric manner refers to that a center line of the first air outlet is not aligned with a center line of the ignition cylinder, but deviates from the center line of the ignition cylinder by a certain distance.