The measurements of quarkonia and doubly-heavy hadrons in $pp$ collisions provide crucial inputs to study both perturbative and non-perturbative quantum chromodynamics. LHCb has a broad physics program of studies of quarkonia and doubly-heavy hadrons. In this proceeding, six recent measurements from the LHCb collaboration are reported: the $\psi(2S)$ production cross-sections measurement, the updated measurement of $\eta_c(1S)$ production cross-section, the observation of a new charmonium state $\rm{X}(3842)$, the observation of an excited $B_c^+$ state, the precision measurement of $B_c^+$ mass, and end this report with the first search of $\Xi_{bc}^0$.