NOVELTY - Magnetic porous carbon adsorbent comprises magnetic-particle covered by graphite layer and embedded in porous carbon kernel. It contains carbon (60-95 wt.%) and magnetic-particle (5-40 wt.%). A porous carbon basal body has big pore-middle pore layering pore structure. The big pore is continuously uniformly arranged. The volume fraction of the middle pore in the whole pore volume is 50-60%. The other pore volume is millipore of which pore diameter is less than 2 nm. The surface area of the adsorbent is 100-500 m2/g. The adsorbent is a magnetic capsule structure.    USE - Magnetic porous carbon adsorbent useful in water treatment, photochemical catalyst technology, fuel cell and corresponding catalysis field.    ADVANTAGE - The method provides new-efficient method for in situ loading of various catalyst kernel.    DETAILED DESCRIPTION - Magnetic porous carbon adsorbent comprises magnetic-particle covered by graphite layer and embedded in porous carbon kernel. It contains carbon (60-95 wt.%) and magnetic-particle (5-40 wt.%). A porous carbon basal body has big pore-middle pore layering pore structure. The middle pore has 2-50 nm diameter. The big pore has pore diameter of more than 50 nm to less than 10 mu m. It is continuously uniformly arranged. The volume fraction of the middle pore in the whole pore volume is 50-60%. The other pore volume is millipore of which pore diameter is less than 2 nm. The surface area of the adsorbent is 100-500 m2/g. The adsorbent is a magnetic capsule structure. An INDEPENDENT CLAIM is included for a method for producing the magnetic porous carbon adsorbent comprising:    (A) using surface active agent to induce magnetic metal hydroxide colloid dissolving out in situ to obtain resin group complex system;    (B) obtaining magnetic porous carbon adsorbent by carbonizing and/or reactivation process;    (C) concrete processing by dissolving inorganic salt or compound of the magnetic metal in the water forming the first solution system (5-30 wt%);    (D) uniformly mixing precipitator, self-assembly inducer and water at 1:0.1-5:1-50 to form a second solution system;    (E) mixing the two solution systems at a ratio of 0.1-1 by weight under 10-100 degrees C and normal atmosphere condition;    (F) making metallic ion in the magnetic metallic compound solution form the hydroxide colloid;    (G) drying the colloid and the ethanol solution of the alcohol-soluble resin according to the proportion by weight ;    (H) removing water and ethanol;    (I) preparing resin/hydroxide complex system; and    (J) carbonizing and/or activating the complex system to prepare the magnetic porous carbon adsorbent.    The self-assembly inducer is segmented copolymer, zwitterions surface active agent or nonionic surface active agent.