An electrostatic coating machine comprising: an air motor an electric potential of which is maintained at a ground level and that rotates a rotational shaft with compressed air supplied; a rotary atomizing head that is provided on the front side of said rotational shaft and is composed of a tubular body an electric potential of which is maintained at the ground level to spray paint, which is supplied while being rotated by said air motor, from a releasing edge in a front end; an external electrode member (6, 81, 91) that is positioned in back of said rotary atomizing head and is provided on an outer peripheral side of said air motor to electrify paint particles sprayed from said releasing edge in said rotary atomizing head to be in a negative potential by applying a negative high voltage to a plural numbers of electrodes (6C, 81C, 91C); a shaping air spurting member that is formed in a tubular shape by using a conductive material and is arranged on an outer peripheral side of said rotary atomizing head in a state where a front end is positioned in an intermediate section of said rotary atomizing head in a length direction, the front end being provided with many numbers of air spurting holes (10, 12) over an entire circumference in a circumferential direction to spurt shaping air toward paint particles sprayed from said rotary atomizing head; and a shield member (14, 31, 41, 51, 61, 71, 92) that is provided on an outer peripheral side of a front side section of said shaping air spurting member, characterized in that: the shield member is formed of an annular body radially extending to shield electric flux lines (20, 23, 24) traveling toward said rotary atomizing head from each of said electrodes (6C, 81C, 91C) in said external electrode member (6, 81, 91); wherein said shield member (14, 31, 51, 92) is formed to be integral with said shaping air spurting member and an electric potential of said shield member (14, 31, 51, 92) is maintained at a ground level through said shaping air spurting member, or wherein said shield member (41, 61, 71) is formed of a conductive material, provided to be separated from said shaping air spurting member, and is mounted in a state of being connected electrically to an outer peripheral side of said shaping air spurting member. an air motor an electric potential of which is maintained at a ground level and that rotates a rotational shaft with compressed air supplied; a rotary atomizing head that is provided on the front side of said rotational shaft and is composed of a tubular body an electric potential of which is maintained at the ground level to spray paint, which is supplied while being rotated by said air motor, from a releasing edge in a front end; an external electrode member (6, 81, 91) that is positioned in back of said rotary atomizing head and is provided on an outer peripheral side of said air motor to electrify paint particles sprayed from said releasing edge in said rotary atomizing head to be in a negative potential by applying a negative high voltage to a plural numbers of electrodes (6C, 81C, 91C); a shaping air spurting member that is formed in a tubular shape by using a conductive material and is arranged on an outer peripheral side of said rotary atomizing head in a state where a front end is positioned in an intermediate section of said rotary atomizing head in a length direction, the front end being provided with many numbers of air spurting holes (10, 12) over an entire circumference in a circumferential direction to spurt shaping air toward paint particles sprayed from said rotary atomizing head; and a shield member (14, 31, 41, 51, 61, 71, 92) that is provided on an outer peripheral side of a front side section of said shaping air spurting member, characterized in that: the shield member is formed of an annular body radially extending to shield electric flux lines (20, 23, 24) traveling toward said rotary atomizing head from each of said electrodes (6C, 81C, 91C) in said external electrode member (6, 81, 91); wherein said shield member (14, 31, 51, 92) is formed to be integral with said shaping air spurting member and an electric potential of said shield member (14, 31, 51, 92) is maintained at a ground level through said shaping air spurting member, or wherein said shield member (41, 61, 71) is formed of a conductive material, provided to be separated from said shaping air spurting member, and is mounted in a state of being connected electrically to an outer peripheral side of said shaping air spurting member. the shield member is formed of an annular body radially extending to shield electric flux lines (20, 23, 24) traveling toward said rotary atomizing head from each of said electrodes (6C, 81C, 91C) in said external electrode member (6, 81, 91); wherein said shield member (14, 31, 51, 92) is formed to be integral with said shaping air spurting member and an electric potential of said shield member (14, 31, 51, 92) is maintained at a ground level through said shaping air spurting member, or wherein said shield member (41, 61, 71) is formed of a conductive material, provided to be separated from said shaping air spurting member, and is mounted in a state of being connected electrically to an outer peripheral side of said shaping air spurting member.