It is composed of concave and convex stainless steel plates formed by stamping. The concave-convex patterns between the two adjacent plates are combined at 180 degrees relative to each other. Therefore, the concave-convex ridges between the two plates of the plate heat exchanger form interlaced contact points. After the contact points are combined by vacuum welding, a high-pressure resistant interlaced flow structure of the plate heat exchanger is formed. These interlaced flow structures cause the cold and hot fluids in the plate heat exchanger to generate intense turbulence, achieving a high heat exchange effect. The plate heat exchanger is composed of a set of corrugated metal plates, with four corner holes on the plates for the two liquids to be transferred to pass through. The metal plates are installed in a frame with a fixed plate and an movable compression plate on one side and are clamped by clamping bolts. The plate is equipped with a sealing gasket to seal the fluid channels and guide the fluid to flow alternately into their respective channels, thus forming heat exchange. The flow rate, physical properties, pressure drop and temperature difference of the fluid determine the quantity and size of the plates. The corrugated plate not only enhances the degree of turbulence but also forms numerous support points, which are sufficient to withstand the pressure difference between the media. The metal plate and the movable plate compression plate are suspended on the upper guide rod and positioned by the lower guide rod, while the rod ends are fixed on the support column.