An electrophotographic photosensitive member comprising: a cylindrical support; a conductive layer formed on the cylindrical support, the conductive layer containing a binding material and metal oxide particles, and not containing any antimony; and a photosensitive layer formed on the conductive layer; wherein the metal oxide particles have a powder resistivity of 1.0 × 10 0 Ω·cm or more and 1.0 × 10 6 Ω·cm or less, and an average primary particle diameter of 0.03 μm or more and 0.50 μm or less; and the conductive layer has a volume resistivity ρ 1 (Ω·cm) satisfying the following mathematical expression: 1.0 × 10 8 ≤ ρ 1 ≤ 2.0 × 10 13 characterized in that the metal oxide particles are: zinc oxide particles doped with aluminum, particles of titanium oxide coated with tin oxide doped with phosphorus, tungsten or fluorine, particles of barium sulfate coated with tin oxide doped with phosphorus, tungsten or fluorine, or particles of zirconium oxide coated with tin oxide doped with phosphorus, tungsten or fluorine; wherein the doping element is contained in an amount in the range of 0.01% by mass to 30% by mass, based on the mass of the metal oxide to be doped; and where a test in which a voltage of -1.0 kV having only a DC voltage component is continuously applied to the conductive layer for 1 hour is conducted, the conductive layer has volume resistivities satisfying the following mathematical expression: − 1.50 ≤ log | ρ 2 | − log | ρ 1 | ≤ 1.50 where ρ 1 is the volume resistivity (Ω·cm) of the conductive layer as measured before the test and ρ 2 is the volume resistivity (Ω·cm) of the conductive layer as measured after the test, and said resistivities are measurable as described in the description. a cylindrical support; a conductive layer formed on the cylindrical support, the conductive layer containing a binding material and metal oxide particles, and not containing any antimony; and a photosensitive layer formed on the conductive layer; wherein the metal oxide particles have a powder resistivity of 1.0 × 10 0 Ω·cm or more and 1.0 × 10 6 Ω·cm or less, and an average primary particle diameter of 0.03 μm or more and 0.50 μm or less; and the conductive layer has a volume resistivity ρ 1 (Ω·cm) satisfying the following mathematical expression: 1.0 × 10 8 ≤ ρ 1 ≤ 2.0 × 10 13 characterized in that the metal oxide particles are: zinc oxide particles doped with aluminum, particles of titanium oxide coated with tin oxide doped with phosphorus, tungsten or fluorine, particles of barium sulfate coated with tin oxide doped with phosphorus, tungsten or fluorine, or particles of zirconium oxide coated with tin oxide doped with phosphorus, tungsten or fluorine; zinc oxide particles doped with aluminum, particles of titanium oxide coated with tin oxide doped with phosphorus, tungsten or fluorine, particles of barium sulfate coated with tin oxide doped with phosphorus, tungsten or fluorine, or particles of zirconium oxide coated with tin oxide doped with phosphorus, tungsten or fluorine; wherein the doping element is contained in an amount in the range of 0.01% by mass to 30% by mass, based on the mass of the metal oxide to be doped; and where a test in which a voltage of -1.0 kV having only a DC voltage component is continuously applied to the conductive layer for 1 hour is conducted, the conductive layer has volume resistivities satisfying the following mathematical expression: − 1.50 ≤ log | ρ 2 | − log | ρ 1 | ≤ 1.50 where ρ 1 is the volume resistivity (Ω·cm) of the conductive layer as measured before the test and ρ 2 is the volume resistivity (Ω·cm) of the conductive layer as measured after the test, and said resistivities are measurable as described in the description.