The present invention relates to a method for manufacturing a fish-eye preparation, comprising the steps of preparing a thermoplastic resin and a weight-change material (S10), mixing the thermoplastic resin prepared in the preparation step (S10) (S20)； a step of transferring chips produced in the step of manufacturing the chip (S20) to an extruder through a hopper, and then transferring chips from 200 to 300 (S30) of injecting molten molten liquid into the mold using a load cell and injecting the melted molten liquid in a predetermined amount into the mold and filling the molten melt into the mold by press-molding the melt filled in the mold with a press apparatus And a compression cooling step (S40) for maintaining the temperature of the mold at 40 to 60 DEG C so that the melt filled in the mold is slowly cooled and stably molded into the shape of a finished product As that which is characterized, It is easy to make a chip by melting and molding a chip mixed with thermo-plastic resin, metal, and a weight reducing material such as metal and stone, so that the environmental contamination of seawater and the physical and mental diseases caused by the use of the conventional lead- In addition to using recycled resin as a thermoplastic resin and by using recycled metal such as forged steel or wire scrap as a weight change raw material, it is possible to reduce the price of the fishermen 's finances, thereby reducing the economic burden on fishermen. There is an effect that can give. In addition, the coating layer is formed by injecting a coating resin having elasticity on the surface of the fish net through the surface coating step, thereby relieving the external impact to stably prevent damage and breakage of the fish net due to the impact, It is possible to extend the service life of the fishbone to prevent the fishbone from being corroded (rusted) in the seawater. Furthermore, in the surface coating step, a coating layer is formed together with a part of the fishing
