A front wheel supporting frame structure for a saddle-ride type vehicle, comprising: a main frame which extends in vehicle front-rear directions; and upper and lower arms (21, 22) which extend in the vehicle front-rear directions and by which a front wheel is supported to be swingable in up-down directions, wherein the front wheel supporting frame structure further comprises: a lower frame extending forward in a vehicle lower portion from a rear portion of the main frame and then extending upward in a vehicle front portion, an upper connection portion to which a rear end portion of the upper arm is swingably connected and which is formed in an upper front portion of the main frame, an extending portion extending downward is formed in a lower front portion of the main frame, a lower connection portion to which a rear end portion of the lower arm is swingably connected is formed in the extending portion, and an upper front portion of the lower frame is connected to the extending portion, the extending portion having a joining portion to which the upper front portion of the lower frame is joined, and the upper front portion of the lower frame being joined to the joining portion by using a fastener, characterised in that the joining portion is formed in a front portion of the extending portion, and the fastener is configured to fasten the upper front portion from a front side of the vehicle. a main frame which extends in vehicle front-rear directions; and upper and lower arms (21, 22) which extend in the vehicle front-rear directions and by which a front wheel is supported to be swingable in up-down directions, wherein the front wheel supporting frame structure further comprises: a lower frame extending forward in a vehicle lower portion from a rear portion of the main frame and then extending upward in a vehicle front portion, an upper connection portion to which a rear end portion of the upper arm is swingably connected and which is formed in an upper front portion of the main frame, an extending portion extending downward is formed in a lower front portion of the main frame, a lower connection portion to which a rear end portion of the lower arm is swingably connected is formed in the extending portion, and an upper front portion of the lower frame is connected to the extending portion, the extending portion having a joining portion to which the upper front portion of the lower frame is joined, and the upper front portion of the lower frame being joined to the joining portion by using a fastener, a lower frame extending forward in a vehicle lower portion from a rear portion of the main frame and then extending upward in a vehicle front portion, an upper connection portion to which a rear end portion of the upper arm is swingably connected and which is formed in an upper front portion of the main frame, an extending portion extending downward is formed in a lower front portion of the main frame, a lower connection portion to which a rear end portion of the lower arm is swingably connected is formed in the extending portion, and an upper front portion of the lower frame is connected to the extending portion, the extending portion having a joining portion to which the upper front portion of the lower frame is joined, and the upper front portion of the lower frame being joined to the joining portion by using a fastener,