Inspired by the Pcs(4459) reported by the LHCb collaboration recently,we investigate the Pcs(4459) production from (∑)b decay in a molecular scenario using an effective Lagrangian approach.With different JP assignments to Pcs (4459),the magnitude of branching fractions of (∑)b → Pcs (4459)K is estimated,which is of the order of 10-4.Together with the decay properties of Pcs (4459),the present estimations could be further testified by precise measurements and contribute to a better understanding of the molecular interpretations and the exploration of JP quantum numbers of Pcs(4459).