The embodiment of the invention discloses a charging adapter for a golf cart. The main body of the charging adapter is a housing and comprises a male end capable of being in matched connection with a charging connector female end of the golf cart, and a female end capable of being in matched connection with a charging connector male end of the golf cart. A circuit board through which the male end and the female end are connected is disposed inside the housing. A USB female interface connected with the circuit board is fixedly disposed on the housing. Thus, perfect adaption between the charging adapter and the original charging connector female end and the charging connector male end of the golf cart is achieved in virtue of the male end of the female end. The charging of a portable digital electronic device in a golf course is achieved in virtue of the circuit board and the USB female interface. Further, multiple charging adapters can be connected successively end to end in order to provide multiple USB female interfaces for satisfying a requirement for simultaneously charging multiple portable digital electronic devices.