Transplanting is a sensitive and precise operation affected by structural parameters of the mechanism and tractor rotating speed fluctuation during operation.A model was established to detect transplanting mechanism by using ADAMS.Parameters matching and trajectory analyses of structural parameters and working parameters were investigated and corresponding tractor velocity v and planting frequency f range were determined.The results showed that the exact length of transplanting arm and driven transplanting arm were 300 mm and 305 mm,respectively.The length of connection rod having greater affect on transplanting performance was 95 mm with the locus height of 225 mm.The optimal matching combination was obtained when f/v was 200.The corresponding feasible planting frequency range increased proportionally with tractor velocity.There was good adaptability in the range between 240 mm and 375 mm transplanting spacing for transplanting mechanism.Results of high-speed camera test indicated that the actual moving track was consistent with the theoretical one.The results of field trials showed that qualified percentage of the depth and length of the hole were 90.7% and 84% with the coefficient of variation being 7.1% and 6.6%,respectively.It can meet the demand of transplanting process of the seedling.It will provide a reference for the adaptability of field operation.