A spring bed mesh sewing device includes a feeding assembly, sewing assemblies, and cloth pressing assemblies. The feeding assembly can lay spring strings in the transverse direction. Each of the spring strings to be sewn in even rows is sewn on a respective previous spring string through the first sewing positions, each of the spring strings to be sewn in odd rows is sewn on a respective previous spring string through the second sewing positions. The sewing assemblies are arranged at intervals in the transverse direction and are movable in the vertical direction. Each sewing assembly includes a sewing head and a base with a sewing channel extending in the vertical direction. The sewing head can sew two adjacent rows of spring strings along the sewing channel. The cloth pressing assemblies are arranged at intervals in the transverse direction and correspond to the sewing assemblies in the longitudinal direction.