大殿座西(xi)向東，歇山(shan)式(shi)抬梁木結構(gou)斗(dou)(dou)拱建筑，八架像屋四(si)橡(xiang)前后(hou)對乳，用四(si)柱(zhu)(zhu)。面(mian)闊(kuo)，進深均(jun)為(wei)(wei)三間(jian)(jian)，平面(mian)成正方(fang)形，前檐(yan)明間(jian)(jian)補間(jian)(jian)鋪(pu)(pu)(pu)作(zuo)三朵(duo)，中(zhong)心一朵(duo)為(wei)(wei)溜金至(zhi)中(zhong)金檁(lin)(lin)，再(zai)接一挑斡至(zhi)脊檁(lin)(lin)；兩(liang)側斗(dou)(dou)拱出五鋪(pu)(pu)(pu)作(zuo)斜拱。次(ci)間(jian)(jian)補間(jian)(jian)鋪(pu)(pu)(pu)作(zuo)為(wei)(wei)一朵(duo)，柱(zhu)(zhu)頭鋪(pu)(pu)(pu)作(zuo)與補間(jian)(jian)鋪(pu)(pu)(pu)作(zuo)均(jun)為(wei)(wei)五鋪(pu)(pu)(pu)作(zuo)斗(dou)(dou)拱。后(hou)檐(yan)柱(zhu)(zhu)上(shang)，斗(dou)(dou)拱簡約，均(jun)以(yi)蜀(shu)柱(zhu)(zhu)替(ti)代櫨斗(dou)(dou)承托(tuo)正心檁(lin)(lin)，用挑枋實現出檐(yan)。屋面(mian)舉折平緩，角有蝦(xia)須橡(xiang)。內柱(zhu)(zhu)直徑56厘米，素面(mian)覆盆式(shi)柱(zhu)(zhu)礎，素面(mian)須彌座石臺基，垂(chui)帶踏道(dao)。
在蘆山縣(xian)龍(long)(long)門鄉青(qing)龍(long)(long)場，南距蘆山縣(xian)城(cheng)蘆陽鎮15公里。青(qing)龍(long)(long)寺(si)建(jian)于元代，現(xian)僅有大殿(dian)尚存。青(qing)龍(long)(long)寺(si)大殿(dian)建(jian)筑凝重樸實，結構(gou)靈活，用材隨宜，不分材等，體(ti)現(xian)著四川地(di)區古建(jian)筑風格的(de)地(di)方特色。
青龍寺(si)大殿(dian)坐西向東，建(jian)筑面積234.1平方米(mi)，通高(gao)9米(mi)，平面呈(cheng)方形，面闊、進深各(ge)三間(jian)(jian)，均15.3米(mi)。為歇山頂抬(tai)梁(liang)式木結構(gou)建(jian)筑，梁(liang)與檁之間(jian)(jian)有斗(dou)拱(gong)撐托，檐面施五鋪作(zuo)斗(dou)拱(gong)9朵，明間(jian)(jian)補間(jian)(jian)鋪作(zuo)3朵，次間(jian)(jian)補間(jian)(jian)鋪作(zuo)各(ge)1朵。大殿(dian)臺基(ji)長寬各(ge)約17.2米(mi)，高(gao)0.9米(mi)。
青龍(long)寺為蘆山(shan)創建(jian)時代較早的寺廟之一，大(da)(da)殿(dian)(dian)(dian)為其現(xian)存的建(jian)筑(zhu)。據傳曾(ceng)見大(da)(da)殿(dian)(dian)(dian)內金柱梁上有唐代紀(ji)年墨(mo)書(shu)，但已漫(man)漶(huan)無法(fa)辯識。現(xian)存原寺另一已毀之關帝(di)殿(dian)(dian)(dian)門枕石一對，上有“大(da)(da)元至正九年……青龍(long)寺”等(deng)銘(ming)刻(ke)，現(xian)大(da)(da)殿(dian)(dian)(dian)屋瓦亦可見“至元一年”、“至元六年”、“至正十二壬辰(chen)年”、“至正十三”等(deng)銘(ming)記。
巧笑倩兮 
