The invention discloses a selective catalytic reduction (SCR) tilting-type particle catalyst module in the environmental protection field. The eco-friendly SCR tilting-type particle catalyst module comprises initial flue gas thin layers, catalyst thin layer air inlet porous plates, catalyst thin layer gas outlet porous plates, catalyst thin layers, clean flue gas thin layers, standby catalyst layers, catalyst thin layer top inclined plates, catalyst thin layer bottom inclined plates, initial flue gas sealing plates, clean flue gas sealing plates, module frame plates and catalyst small units. The catalyst module comprises small units and is arranged on a layer of a reactor. The widths of the initial flue gas thin layer, the clean flue gas thin layer and the catalyst thin layer in each one of the small units can be adjusted. A design direction of the catalyst thin layer in the small unit is consistent with a flue gas flowing direction. The bottom of the thin layer is provided with an inclined angle. The inclined angle is approximate to a flue gas flowing angle. A direction of the catalyst thin layer is parallel to a flue gas flowing direction. Two sides of the catalyst thin layer are provided with the porous plates. The catalyst module reduces a catalyst module volume, reduces energy consumption, prevents module obstruction and prolongs catalyst replacement time.