Magnetic filter machine is a composite liquid purification equipment, which is designed to combine the mechanical filtration function of filter bag or basket with the magnetic adsorption function of built-in magnetic rod in the traditional pressure filter chamber. This design can synchronously and efficiently remove two key impurities from liquids: ferromagnetic particles (such as iron filings and abrasives) are captured by high-strength magnetic force, while other non-magnetic solid particles are intercepted by filter bags or baskets. It is particularly suitable for protecting downstream precision equipment (such as spinnerets, metering pumps), improving the cleanliness level of products such as oil, coatings, resins, etc. It is an economical and practical solution to achieve integrated and efficient purification.