Front loader and work machine

A front loader comprising:

• a boom to which a bucket or a working implement other than the bucket is attached;
• a boom cylinder to move the boom;
• a first control valve to supply an operation fluid to the boom cylinder;
• a supporting member supporting the boom on a front portion of a vehicle body of a working machine;
• an attachment frame extending backward from the supporting member, the attachment frame being attached to a side portion of the vehicle body;
• a second control valve to supply the operation fluid to the working implement, the second control valve being attached to the attachment frame;
• a first attachment member on which the first control valve is fixed, the first attachment member being attached to the attachment frame;
• and
• a second attachment member on which the second control valve is fixed, the second attachment member being attached to the first attachment member;
• wherein the first attachment member is arranged outside from the attachment frame in the width direction, and wherein the second attachment member extends striding over the attachment frame from the inside from the outside in the width direction and is attached to the first attachment member.