The invention discloses an efficient pre-treatment device of oily wastewater. The efficient pre-treatment device comprises a first level membrane filter, a rotating disk extraction tower, a second level membrane filter and an ammonia still which are sequentially arranged behind a liquid entrance; the first level membrane filter and the second level membrane filter both comprise a plurality of ceramic membrane filters, and the first level membrane filter is provided with a sewage draining outlet for draining unoil wastewater; the ammonia still is provided with an ammonia gas outlet and an outlet for deamination dephenolization wastewater. Each ceramic membrane filter comprises a cylinder body, the top part of the cylinder body is provided with a liquid inlet, the bottom part is provided with a sewage outlet, the side wall of the cylinder body is provided with an air intake back flushing port and a liquid outlet, and a plurality of pieces of ceramic membrane circular tubes are fixed in the cylinder body through a baffle plate. According to the efficient pre-treatment device of oily wastewater, the aim of efficiently reducing oils, phenols and ammonia nitrogen in semi coke wastewater can be realized while recycling the oils, phenols and ammonia nitrogen during the treatment on the semi coke wastewater, and the efficient pre-treatment device of oily wastewater is a device integrating wastewater treatment and resource recovery into a whole.