The invention relates to an oiling mechanism for a multi-functional nylon yarn machine. The oiling mechanism is used for oiling nylon yarns and comprises an oiling tank, a front yarn feeding roller, a lower pressing roller and a rear yarn feeding roller. The front yarn feeding roller and the rear yarn feeding roller are disposed at the front and rear ends on the outside of the oiling tank respectively. Oil is accommodated in the oiling tank, the lower pressing roller is disposed in the oiling tank, and part of the lower pressing roller is submerged in the oil. The front yarn feeding roller and the rear yarn feeding roller are disposed below the nylon yarns. The lower pressing roller is disposed above the nylon yarns. According to the oiling mechanism, the nylon yarns are fully submerged in the oiling tank and are not affected by the oil and wrap angles, so that oiling is uniform, and the product quality is improved.