Provided is a charging member capable of suppressing the occurrence of an image defect due to the non-uniform abrasion of a photosensitive member and a stain, in a long-term use.The charging member includes an electro-conductive elastic layer as a surface layer.The electro-conductive elastic layer contains a binder and a bowl-shaped resin particle having an opening. The surface of the charging member has a concavity and a protrusion derived from the bowl-shaped resin particle. The relations represented by the following formulae are satisfied, 0.2 ≤ S =  S ⁢ ⁢ 5 - S ⁢ ⁢ 1  S ⁢ ⁢ 1 ≤ 0.5 0.15 ≤ d =  d ⁢ ⁢ 5 - d ⁢ ⁢ 1  d ⁢ ⁢ 1 ≤ 0.5 wherein, when the charging member is pressed onto a glass plate with 100 (g) load, S1 is the average value of contact areas, d1 is the average value of heights of spaces formed in a contact region; and when the load is changed to 500 (g), S5 is the average value of contact areas, d5 is the average value of heights of spaces.