actions of vector groupoids

in this work we deal with actions of vector groupoid which is a new concept in the literature‎. ‎after we give the definition of the action of a vector groupoid on a vector space‎, ‎we obtain some results related to actions of vector groupoids‎. ‎we also apply some characterizations of the category and groupoid theory to vector groupoids‎. ‎as the second part of the work‎, ‎we define the notion of a crossed module over a vector groupoid‎. ‎finally‎, ‎we show that the category $mathcal{vg}$ of the vector groupoids is equivalent to the category $mathcal{cm}odmathcal{vg}$ of the crossed modules over a vector groupoid‎.