HDQ small and medium-sized container type hydrogen electrolysis series: a read-to-use small and medium-sized hydrogen production equipment, hydrogen output of 3Nm³/h~300Nm³/h, hydrogen purity of more than 99.999%, suitable for on-site hydrogen production scenarios; The hydrogen production equipment is installed near the hydrogen equipment, and can be produced on-site only by water supply and power supply, without civil engineering. The equipment is small in size, light in weight, convenient and quick in installation, one-button start, fully automatic and unattended, saving worry and trouble, and simple in operation.