Quarkonia Production at LHCb

We present recent LHCb results in the quarkonia production with three topics. With 1 fb$^{-1}$ data collected in 2011 with pp collisions at a proton-proton center-of-mass energy $\sqrt{s}$ = 7 TeV, the ratios of $\sigma(\chi_c 0)/\sigma(\chi_c 2)$ and $\sigma(\chi_c 2)/\sigma(\chi_c 1)$ are measured. With 0.37 fb$^{-1}$ data collected in 2011, the polarization of prompt $J/\psi$ is measured using an angular analysis of the decay $J/\psi \to \mu^+\mu^-$. Finally the production of $J/\psi$ is studied with the 1.6 nb$^{-1}$ data collected in 2013 with proton-lead collisions at a proton-nucleon center-of-mass energy $\sqrt{s_{NN}}$ = 5 TeV. The nuclear modification factor and the forward-backward production ratio are determined for prompt $J/\psi$ and $J/\psi$ from b-hadron decays for the first time.