NOVELTY - Purifying hypericin from Hypericum perforatum via continuous column chromatography at constant temperature with high flux, comprises: (a) selecting dry Hypericum perforatum ground plant; pulverizing; soaking in water; (b) placing material into extracting tank and extracting; (c) adding impurity removing agent; uniformly stirring; settling in a filtrate storing tank; removing the large impurities; filtering extracting liquid to obtain filtrate; and (d) placing filtrate into chromatography column of continuous column chromatography at constant temperature with high flux.    USE - The process is useful for purifying hypericin from hypericum perforatum via continuous column chromatography at constant temperature with high flux (claimed).    ADVANTAGE - Compared with traditional column chromatography system, the dosage of resin can be reduced by 30-50%; the auxiliary products of all processes can be greatly reduced because of the continuous manner and the regenerating agent close to equivalent ratio; and the dosage of washing water can be reduced by 50-70%. Moreover, the materials with different characteristics can be separated; and the device is compact, easy to install, and easy to match with the existing production procedure and device. Additionally, the production speed can be adjusted according to the mass and flow rate of the input fluids; thus, it can ensure the operation in optimized economical state; and the flowing manners of the fluids can be in series or parallel according to the requirements of production.    DETAILED DESCRIPTION - Purifying hypericin from Hypericum perforatum via continuous column chromatography at constant temperature with high flux, comprises: (a) selecting dry Hypericum perforatum ground plant; pulverizing it; soaking it in water at 50 degrees C for 1.5 hours; (b) placing the soaked material into the extracting tank; adding sodium hydroxide (NaOH), taking up 0.5 wt.% of the raw material; extracting for 4 times at 0.05 MPa pressure and at 60 degrees C by methane with concentration of 75%; where each time is carried out for 2 hours; using a rotary evaporator to recycle the methane; and mixing the extracting liquids; (c) adding proper amount of impurity removing agent to the mixed extracting liquid; uniformly stirring; settling in a filtrate storing tank; adjusting the pH to 7-8; removing the large impurities; filtering the extracting liquid to obtain filtrate; and (d) placing the filtrate into the chromatography column of the continuous column chromatography at constant temperature with high flux; placing the same or different resins to the chromatography column; where the resins are soaked for 48 hours by water before using; using water to wash again and again; using ethanol with concentration of 60% to soak for 10 hours; using water to wash until there is no odor of ethanol; soaking with water; and maintaining the operation temperature of the chromatography column at 40-50 degrees C; absorbing the filtrate in a first chromatography column and a third chromatography; using ethanol to reversely elute it to remove impurities; using the ethanol with concentration of 80% to elute it in normal direction; desorbing it; collecting the liquid from it; placing the liquid before first eluting and the filtrate into a second chromatography column and a fourth chromatography column; carrying out chromatography; using ethanol to reversely elute the impurities; using the ethanol with concentration of 80% to elute it and desorbing it; collecting the liquid from it; placing the liquid of the first eluting of the second and fourth chromatography columns and the filtrate into a fifth chromatography column and a sixth chromatography column; collecting the liquid from it; conveying the recycled solutions by pipes into the double-effect recycling condenser and condensing at 60 degrees C with vacuum pressure of 0.08 MPa; conveying into a spraying drier; and pulverizing and sieving to obtain finished product; where the purifying process is carried out in sealing manner; the observing ports and detecting points are mounted in all inflow and outlet pipe ports and annular joint pipes and the lower parts of the chromatography columns; the flow rate, temperature, concentration, content and time of the whole process are detected and recorded timely and quantitatively; and the process uses a continuous chromatography device at constant temperature with high flux comprising chromatography columns, a filtrate storing tank, a rotary recycling device, an extracting tank, a filtrate storing tank, a double-effect recycling and condensing device, a drying device, a recycled solvent storing tank, a solvent recycling device, and a solvent tank mounted in parallel.    DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram of the process for purifying the hypericin from Hypericum perforatum via continuous column chromatography at constant temperature with high flux (Drawing includes non-English language text).