A throttle grip device comprising: a throttle grip that is rotatable by a driver; an interlocking member that can be rotated in conjunction with the throttle grip; rotation angle detecting means that can detect a rotation angle of the throttle grip by detecting a rotation angle of the interlocking member; and resistance means (8,11) that can generate rotation load by generating a resistance force during rotation of the throttle grip, wherein the throttle grip device can control an engine of a vehicle in accordance with the rotation angle of the throttle grip detected by the rotation angle detecting means, the resistance means (8,11) is configured such that a resistance force generated in an initial range in which the throttle grip is rotated by a predetermined angle (α°) from an initial position (0°) can be smaller than a resistance force generated in a range in which the rotation angle of the throttle grip is larger than the predetermined angle (α°), and the resistance means (8,11) includes: a sliding member that is assembled to be abutted against a sliding surface (n) that is formed in a circumferential direction of the interlocking member; and biasing means that can press the sliding member against the sliding surface (n) by applying a biasing force to the sliding member, and generate sliding resistance with rotation of the interlocking member, characterized in that a recess is formed in a part of the sliding surface (n) corresponding to the initial range, and a compression dimension of the biasing means when the sliding member is located in the recess is set to be smaller than the compression dimension of the biasing means when the sliding member is located in other parts of the sliding surface (n), the resistance means (8,11) includes pressing means that presses the interlocking member toward a direction in which the interlocking member is rotated from the initial position (0°) over the initial range, and the pressing means includes a spring that can press a predetermined part (f) of the interlocking member by a biasing force. a throttle grip that is rotatable by a driver; an interlocking member that can be rotated in conjunction with the throttle grip; rotation angle detecting means that can detect a rotation angle of the throttle grip by detecting a rotation angle of the interlocking member; and resistance means (8,11) that can generate rotation load by generating a resistance force during rotation of the throttle grip, wherein the throttle grip device can control an engine of a vehicle in accordance with the rotation angle of the throttle grip detected by the rotation angle detecting means, the resistance means (8,11) is configured such that a resistance force generated in an initial range in which the throttle grip is rotated by a predetermined angle (α°) from an initial position (0°) can be smaller than a resistance force generated in a range in which the rotation angle of the throttle grip is larger than the predetermined angle (α°), and the resistance means (8,11) includes: a sliding member that is assembled to be abutted against a sliding surface (n) that is formed in a circumferential direction of the interlocking member; and biasing means that can press the sliding member against the sliding surface (n) by applying a biasing force to the sliding member, and generate sliding resistance with rotation of the interlocking member, a sliding member that is assembled to be abutted against a sliding surface (n) that is formed in a circumferential direction of the interlocking member; and biasing means that can press the sliding member against the sliding surface (n) by applying a biasing force to the sliding member, and generate sliding resistance with rotation of the interlocking member, characterized in that a recess is formed in a part of the sliding surface (n) corresponding to the initial range, and a compression dimension of the biasing means when the sliding member is located in the recess is set to be smaller than the compression dimension of the biasing means when the sliding member is located in other parts of the sliding surface (n), the resistance means (8,11) includes pressing means that presses the interlocking member toward a direction in which the interlocking member is rotated from the initial position (0°) over the initial range, and the pressing means includes a spring that can press a predetermined part (f) of the interlocking member by a biasing force.