A detailed analysis is given on the method of breaking supersymmetry spontaneously by introducing a supersymmetric dipole field. It is demonstrated how a pair of massless Goldstinos, one with positive metric and the other with negative metric, is decoupled from the physical sector yet results in apparently explicit but soft breaking terms. Due to the presence of an unobservable ghost Goldstino, the vacuum energy is no longer assured to be non-negative in contrast to the usual argument. A dipole of vector multiplets is also proposed to obtain a C-term like breaking without taking a singular limit of the vanishing gauge coupling constant.