Device for transporting babies in cars, comprising a base suited to be fixed to a car seat and to support a baby car seat, said device comprising: - means for coupling/releasing said baby car seat with/from said base, said coupling/releasing means comprising at least one pair of hooks belonging to said base, each one of said hooks being configured to cooperate with a corresponding coupling element belonging to said baby car seat; - manoeuvring means suited to be operated by the user and to connect/ release each one of said hooks with/from the corresponding coupling element in order to connect/separate said baby car seat with/from said base; - safety means suited to prevent any unintentional disconnection of said hooks from said coupling elements and the separation of said baby car seat from said base, characterized in that said manoeuvring means comprise: - a fixed longitudinal member belonging to said base and revolvingly and elastically associated with said hooks; - a sliding longitudinal member associated with said fixed longitudinal member and configured to mechanically cooperate with said hooks in order to open/close them with respect to said coupling elements; - a release rod suited to release said hooks from the corresponding coupling elements, said release rod being slidingly interposed between said fixed longitudinal member and said sliding longitudinal member and being provided with a grip suited to be used to manoeuvre said release rod in order to intentionally open said hooks, said safety means being associated with said sliding longitudinal member and being suited to be included between counteracting means belonging to said release rod and engagement means belonging to said fixed longitudinal member, in order to prevent the mutual movement of said release rod and said sliding longitudinal member and to avoid any unintentional separation of said hooks from said coupling elements once said hooks have been connected with said coupling elements. - means for coupling/releasing said baby car seat with/from said base, said coupling/releasing means comprising at least one pair of hooks belonging to said base, each one of said hooks being configured to cooperate with a corresponding coupling element belonging to said baby car seat; - manoeuvring means suited to be operated by the user and to connect/ release each one of said hooks with/from the corresponding coupling element in order to connect/separate said baby car seat with/from said base; - safety means suited to prevent any unintentional disconnection of said hooks from said coupling elements and the separation of said baby car seat from said base, - a fixed longitudinal member belonging to said base and revolvingly and elastically associated with said hooks; - a sliding longitudinal member associated with said fixed longitudinal member and configured to mechanically cooperate with said hooks in order to open/close them with respect to said coupling elements; - a release rod suited to release said hooks from the corresponding coupling elements, said release rod being slidingly interposed between said fixed longitudinal member and said sliding longitudinal member and being provided with a grip suited to be used to manoeuvre said release rod in order to intentionally open said hooks, said safety means being associated with said sliding longitudinal member and being suited to be included between counteracting means belonging to said release rod and engagement means belonging to said fixed longitudinal member, in order to prevent the mutual movement of said release rod and said sliding longitudinal member and to avoid any unintentional separation of said hooks from said coupling elements once said hooks have been connected with said coupling elements.