The temperature-uniaxial pressure (T-P) phase diagram of metal, spin density wave in (TMTSF)(2)PF6 was apparently quite similar to that of hydrostatic pressure irrespective of the direction of the uniaxial pressure in strain method. However, by the examination of rho(a), rho(b),' and rho(c)* under three uniaxial pressures, it was found that the new phase diagram is based on quite different electronic structure among three uniaxial pressures. The reduction SDW by a-compression must primarily be due to the reduction of density of state, with which electron correlation is important. The strain along b' and c*-axes reduces strongly the anisotropy, i.e. l(a)/l(b') = 4.3 with p//c* 10 kbar, for instance, where still SDW is present.