The invention provides a methanesulfonic acid dabigatran etexilate crystal form VII and a preparing method and application thereof. The X-ray powder diffraction pattern of the methanesulfonic acid dabigatran etexilate crystal form VII is shown in figure 1, and DSC diagram is shown in figure 2. The moisture absorption performance and stability of the methanesulfonic acid dabigatran etexilate crystal form VII are both higher than those of a methanesulfonic acid dabigatran etexilate crystal form I (the medicinal component of commercially available Pradaxa capsules) reported in patent CN1845917A. Meanwhile, industrialization of the preparing method can be achieved easily, and production adaptability is high.