A photovoltaic module mounting structure, comprising: a plurality of photovoltaic modules, each of which comprising a panel having a front side, which is a light-receiving side, and: a first backside securing block connector member and a first backside hook connector member both attached to a first end of the backside of the panel of each photovoltaic module; a front bracket assembly to which the first backside securing block connector member and the first backside hook connector member are further attached; a second backside securing block connector member and a second backside hook connector member both attached to a second end of the backside of the panel of each photovoltaic module; a rear bracket assembly to which the second backside securing block connector member and the second backside hook connector member are further attached; wherein the front bracket assembly is connected to the first backside securing block connector member and to the first backside hook connector member via a first hinge so as to be freely rotatable about the first backside securing block connector member and the first backside hook connector member, and the rear bracket assembly is connected to the second backside securing block connector member and the second backside hook connector member via a second hinge so as to be freely rotatable about the second backside securing block connector member and the second backside hook connector member; characterized in that the front bracket assembly comprises a front bracket and a front cross-coupling beam, wherein the front bracket is formed with a cylindrical head and is shaped into an R-shaped member as viewed from a cross section; wherein a side surface of the front bracket fits the front cross-coupling beam; wherein the front cross-coupling beam serves as a bottom side support bar for the module; and in that the photovoltaic mounting structure further comprises a first and a second hook members each comprising a bottom surface and an arc hook portion; wherein the first hook member is connected to the first backside hook connector member with a countersunk screw and the second hook member is connected to the second backside hook connector member with a countersunk screw; wherein the arc hook portion of the first hook member has a concave rounded surface for mating with the top R-shaped member of the front cross-coupling beam; and in that the top of the front bracket assembly is connected to a securing block with a countersunk screw, while the bottom surface of the front bracket assembly is secured to a bottom connector member by a cover slab structure and is at a right angle with respect to the bottom connector member. a first backside securing block connector member and a first backside hook connector member both attached to a first end of the backside of the panel of each photovoltaic module; a front bracket assembly to which the first backside securing block connector member and the first backside hook connector member are further attached; a second backside securing block connector member and a second backside hook connector member both attached to a second end of the backside of the panel of each photovoltaic module; a rear bracket assembly to which the second backside securing block connector member and the second backside hook connector member are further attached; wherein the front bracket assembly is connected to the first backside securing block connector member and to the first backside hook connector member via a first hinge so as to be freely rotatable about the first backside securing block connector member and the first backside hook connector member, and the rear bracket assembly is connected to the second backside securing block connector member and the second backside hook connector member via a second hinge so as to be freely rotatable about the second backside securing block connector member and the second backside hook connector member; characterized in that the front bracket assembly comprises a front bracket and a front cross-coupling beam, wherein the front bracket is formed with a cylindrical head and is shaped into an R-shaped member as viewed from a cross section; wherein a side surface of the front bracket fits the front cross-coupling beam; wherein the front cross-coupling beam serves as a bottom side support bar for the module; and in that the photovoltaic mounting structure further comprises a first and a second hook members each comprising a bottom surface and an arc hook portion; wherein the first hook member is connected to the first backside hook connector member with a countersunk screw and the second hook member is connected to the second backside hook connector member with a countersunk screw; wherein the arc hook portion of the first hook member has a concave rounded surface for mating with the top R-shaped member of the front cross-coupling beam; and in that the top of the front bracket assembly is connected to a securing block with a countersunk screw, while the bottom surface of the front bracket assembly is secured to a bottom connector member by a cover slab structure and is at a right angle with respect to the bottom connector member.