A tape applicator comprising: the tape feeding device; a tape holding body; an application unit and a case, wherein the tape feeding device is operable to feed a tape wound round a shaft core in a forward direction and comprises a substantially cylindrical drawing roller operable to rotate together with the tape and a ratchet wheel rotated in the forward direction together with the drawing roller; a releasing roller operable to feed the tape in the forward direction while the releasing roller releases a leading edge of the tape by rotating together with the rotation of the drawing roller; and a belt which couples the drawing roller and the releasing roller; wherein the tape holding body is operable to rotationally hold the tape and support the tape feeding device; the case that accommodates the tape holding body, wherein the leading end of the tape is reserved in a released state, and the case further includes a driving unit including a driving transmission member having an operating pawl engaged with teeth of the ratchet wheel and a returning spring which biases the driving transmission member to promote the engagement of the ratchet wheel and the operating pawl, and the driving transmission member is arranged sidewise in an axial direction of the ratchet wheel; and the application unit which is supported by the tape holding body and that has an application roller for pressingly contacting the tape onto an application target surface and a cutting blade characterized in that: the cutting blade is arranged so as to be swingably moved between the application roller and the drawing roller; and a driving claw for driving the cutting blade is provided in the driving unit so that the cutting blade cuts the tape when the driving unit is returned. the tape feeding device; a tape holding body; an application unit and a case, wherein the tape feeding device is operable to feed a tape wound round a shaft core in a forward direction and comprises a substantially cylindrical drawing roller operable to rotate together with the tape and a ratchet wheel rotated in the forward direction together with the drawing roller; a releasing roller operable to feed the tape in the forward direction while the releasing roller releases a leading edge of the tape by rotating together with the rotation of the drawing roller; and a belt which couples the drawing roller and the releasing roller; wherein the tape holding body is operable to rotationally hold the tape and support the tape feeding device; the case that accommodates the tape holding body, wherein the leading end of the tape is reserved in a released state, and the case further includes a driving unit including a driving transmission member having an operating pawl engaged with teeth of the ratchet wheel and a returning spring which biases the driving transmission member to promote the engagement of the ratchet wheel and the operating pawl, and the driving transmission member is arranged sidewise in an axial direction of the ratchet wheel; and the application unit which is supported by the tape holding body and that has an application roller for pressingly contacting the tape onto an application target surface and a cutting blade characterized in that: the cutting blade is arranged so as to be swingably moved between the application roller and the drawing roller; and a driving claw for driving the cutting blade is provided in the driving unit so that the cutting blade cuts the tape when the driving unit is returned.