A front loader comprising: a boom actuator configured to pivotally drive a boom along a vertical direction relative to a traveling vehicle body about a first pivot axis which is oriented along a right/left direction; a bucket actuator configured to pivotally drive a bucket along the vertical direction relative to the boom about a second pivot axis which is oriented along the right/left direction; a boom angle detector for detecting a vertical pivot angle (θa) of the boom; and a bucket angle detector for detecting a vertical pivot angle (θb) of the bucket relative to the boom; the front loader being characterized in that it further comprises: a manual controlling section for controlling operations of the boom actuator and the bucket actuator based on an operational instruction outputted from an instruction operational tool; a calculating section for calculating a ground pivot angle (θc) of the bucket based on an output from the boom angle detector and an output from the bucket angle detector; a storage section storing an elevation restricted angle (θbb) of the bucket which is set smaller by a set angle than an elevation limit angle (θba) of the bucket and further storing a lowering restricted angle (θbd) of the bucket which is set greater by a set angle than a lowering limit angle (θbc) of the bucket; and a ground angle maintaining controlling section for controlling the operation of the bucket actuator based on an output from the calculating section such that the ground pivot angle (θc) of the bucket may be maintained constant irrespective of any vertical pivotal movement of the boom; the ground angle maintaining section being configured to stop the bucket actuator when it is detected based on the elevation restricted angle (θbb) and the lowering restricted angle (θbd) of the bucket stored in the storage section, that the vertical pivot angle (θb) of the bucket outputted from the angle detector has reached the elevation restricted angle (θbb) or the lowering restricted angle (θbd). a boom actuator configured to pivotally drive a boom along a vertical direction relative to a traveling vehicle body about a first pivot axis which is oriented along a right/left direction; a bucket actuator configured to pivotally drive a bucket along the vertical direction relative to the boom about a second pivot axis which is oriented along the right/left direction; a boom angle detector for detecting a vertical pivot angle (θa) of the boom; and a bucket angle detector for detecting a vertical pivot angle (θb) of the bucket relative to the boom; the front loader being characterized in that it further comprises: a manual controlling section for controlling operations of the boom actuator and the bucket actuator based on an operational instruction outputted from an instruction operational tool; a calculating section for calculating a ground pivot angle (θc) of the bucket based on an output from the boom angle detector and an output from the bucket angle detector; a storage section storing an elevation restricted angle (θbb) of the bucket which is set smaller by a set angle than an elevation limit angle (θba) of the bucket and further storing a lowering restricted angle (θbd) of the bucket which is set greater by a set angle than a lowering limit angle (θbc) of the bucket; and a ground angle maintaining controlling section for controlling the operation of the bucket actuator based on an output from the calculating section such that the ground pivot angle (θc) of the bucket may be maintained constant irrespective of any vertical pivotal movement of the boom; the ground angle maintaining section being configured to stop the bucket actuator when it is detected based on the elevation restricted angle (θbb) and the lowering restricted angle (θbd) of the bucket stored in the storage section, that the vertical pivot angle (θb) of the bucket outputted from the angle detector has reached the elevation restricted angle (θbb) or the lowering restricted angle (θbd). a manual controlling section for controlling operations of the boom actuator and the bucket actuator based on an operational instruction outputted from an instruction operational tool; a calculating section for calculating a ground pivot angle (θc) of the bucket based on an output from the boom angle detector and an output from the bucket angle detector; a storage section storing an elevation restricted angle (θbb) of the bucket which is set smaller by a set angle than an elevation limit angle (θba) of the bucket and further storing a lowering restricted angle (θbd) of the bucket which is set greater by a set angle than a lowering limit angle (θbc) of the bucket; and a ground angle maintaining controlling section for controlling the operation of the bucket actuator based on an output from the calculating section such that the ground pivot angle (θc) of the bucket may be maintained constant irrespective of any vertical pivotal movement of the boom; the ground angle maintaining section being configured to stop the bucket actuator when it is detected based on the elevation restricted angle (θbb) and the lowering restricted angle (θbd) of the bucket stored in the storage section, that the vertical pivot angle (θb) of the bucket outputted from the angle detector has reached the elevation restricted angle (θbb) or the lowering restricted angle (θbd).