The invention discloses a chain oiling device which comprises a tank, chain wheels, a chain, an
oil pump, an
air pump and a motor. The multiple chain wheels are arranged on the inner side of the tankfrom left to right; the chain sequentially bypasses the multiple chain wheels; a
clapboard is arranged on the inner side of the tank; the inner side of the tank is divided into a left cavity and a right cavity through the
clapboard; a mist spray cover is arranged at the position, located on the upper part of the chain, in the cavity on the left side; and
oil mist nozzles are arranged on the innerside of the mist spray cover. Through arranging the
oil mist nozzles, misty oil is sprayed for oiling the chain in all dimensions, so that an oiling effect is better, the excessive oiling is avoided,and the production cost is reduced; through arranging the mist spray cover, the
oil mist activity range is limited, so that concentrated mist spraying is realized, and the oiling efficiency is improved; and meanwhile, through arranging a spray
pipe and the multiple nozzles arranged on the spray
pipe, redundant oil on the chain can be cleared through high-pressure gas and is recovered into an
oil tank through an oil return plate and an oil return
pipe, so that the occurrence of the phenomena of environment
pollution and resource waste occurred since the redundant oil is carried out by the chainis avoided.