The utility model relates to a photovoltaic power station bracket field especially relates to a photovoltaic module briquetting and use photovoltaic power generation system of this briquetting. The utility model discloses a photovoltaic power generation system, including the installing support with utilize the photovoltaic module briquetting to set firmly the photovoltaic module on the installingsupport, the photovoltaic module briquetting includes the briquetting body, this briquetting body include pressing part and be used for with the crimping portion of purlin rigid coupling, pressing part and crimping portion link together through connecting portion, crimping troops under one's command portion with the corresponding direction of purlin width direction on be equipped with two and keepoff arms, two inboards that keep off arms have respectively and correspond purlin block complex block face. The utility model discloses a photovoltaic module briquetting can utilize in the crimping portion the fender arm firmly the buckle effectively avoided the problem of briquetting slope, simple structure, reasonable, long service life on the purlin.