Abstract: A Series of platipum (Ⅱ) complexes of the trans[PHX (PPh₃)₂], where anionic ligand(X)=NO₃^-、NO₂^-、NCS^-、Cl^-、Br^-、and I^-, have been prepared. ¹H-NMR studies of these complexes have been made. The ¹H-NMR spectra of these platincnm complexes obtained show a very large hige-field ¹H chemical shift(δ_H) in the range of-12 to-24 ppm. The coupling constants (J_pt-H) of platinum hydrogen are also large,and range 900-1400Hz, J_P-H of phosphines are about 15Hz. The effects of Ligands (X), (L) on the chemical shift and coupling constant, as well as the effect of the length of platinum(Ⅱ) hydrogen bond on the chemical shemical shift (δ_H)were studies. A linear relationship between the electronegativity of there anionic ligane (X) and ¹H chemical shift (δ_H) has been correlated.