<正> In this work,we develop a general framework in which Noncommutative Quantum Mechanics （NCQM）,characterized by a space noncommutativity matrix parameter θ=∈jikθk and a momentum noncommutativity matrixparameter βij=∈ijkβk,is shown to be equivalent to Quantum Mechanics （QM） on a suitable transformed QuantumPhase Space （QPS）.Imposing some constraints on this particular transformation,we firstly find that the product of thetwo parameters θ and β possesses a lower bound in direct relation with Heisenberg incertitude relations,and secondlythat the two parameters are equivalent but with opposite sign,up to a dimension factor depending on the physicalsystem under study.This means that noncommutativity is represented by a unique parameter which may play the roleof a fundamental constant characterizing the whole NCQPS.Within our framework,we treat some physical systems onNCQPS:free particle,harmonic oscillator,system of two-charged particles,Hydrogen atom.Among the obtained results,we discover a new phenomenon which consists of a free particle on NCQPS viewed as equivalent to a harmonic oscillatorwith Larmor frequency depending on β,representing the same particle in presence of a magnetic field （?）=q-1（?）.For theother examples,additional correction terms depending on β appear in the expression of the energy spectrum.Finally,inthe two-particle system case,we emphasize the fact that for two opposite charges noncornmutativity is effectively feeledwith opposite sign.
