The present disclosure provides an electric steam iron, comprising: a housing provided with a water injection unit, the water injection unit being configured to injecting water; a heating unit comprising a heating shell and a heating element, a first chamber and a second chamber being set in the heating shell, the first chamber is configured for receiving water from the water injection unit; the heating shell is in the first chamber and heats the water in the first chamber to generate steam; the second chamber is connected with the first chamber to receive steam in the first chamber; a first lead-out hole is defined in a bottom of the first chamber; a cover is provided to cover a bottom of the heating shell a steam ironing plate, a steam channel is on the steam ironing plate, the steam channel being distributed on the steam ironing plate in a roundabout manner.