This dataset contains two tables derived from the LAMOST DR11 v1.1 MRS. One table records the specific information of the 6106 candidate sources (denoted sample 2) we selected, including gaia_source_id, RAJ2000, DEJ2000, the time span of the observations, and stellar atmospheric parameters. The other table records the solution information for the 623 SB1 systems (including both SB1 and TrendSB1) that we identified. The candidate sample is constructed from LAMOST-MRS radial velocity time series after applying quality cuts and an F2-based RV variability test, while the SB1 orbital solutions are obtained by fitting Keplerian models using a combination of global differential evolution optimization, local Levenberg-Marquardt refinement, and MCMC sampling, and the TrendSB1 solutions are derived by directly fitting polynomial trend models. This table provide a catalog of SB1 systems that can be used for studies of binary star demographics, follow-up observations, and cross-matching with other spectroscopic and photometric surveys.