根據市級生產(chan)(chan)總值(zhi)統一(yi)核算結(jie)果，2020年(nian)威海市生產(chan)(chan)總值(zhi)3017.79億元(yuan)(yuan)，按可比價格計算，增長3.0%。分產(chan)(chan)業(ye)(ye)(ye)看，第一(yi)產(chan)(chan)業(ye)(ye)(ye)增加值(zhi)301.66億元(yuan)(yuan)，增長2.9%；第二產(chan)(chan)業(ye)(ye)(ye)增加值(zhi)1162.27億元(yuan)(yuan)，增長2.1%；第三產(chan)(chan)業(ye)(ye)(ye)增加值(zhi)1553.86億元(yuan)(yuan)，增長3.7%。全市三次產(chan)(chan)業(ye)(ye)(ye)結(jie)構(gou)由上年(nian)的(de)9.7:40.4:49.9調整為10.0:38.5:51.5。

2020年(nian)(nian)(nian)，威海市(shi)農林(lin)牧漁業總產(chan)值按可比價格計算增(zeng)(zeng)長(chang)(chang)(chang)3.2%，增(zeng)(zeng)速(su)較(jiao)(jiao)上(shang)(shang)年(nian)(nian)(nian)提(ti)(ti)高(gao)2.6個百(bai)(bai)分(fen)(fen)點(dian)(dian)(dian)(dian)。2020年(nian)(nian)(nian)，全(quan)市(shi)規(gui)模(mo)以(yi)上(shang)(shang)工業增(zeng)(zeng)加值增(zeng)(zeng)長(chang)(chang)(chang)4.6%，增(zeng)(zeng)速(su)較(jiao)(jiao)上(shang)(shang)年(nian)(nian)(nian)提(ti)(ti)高(gao)2.3個百(bai)(bai)分(fen)(fen)點(dian)(dian)(dian)(dian)。2020年(nian)(nian)(nian)，全(quan)市(shi)規(gui)模(mo)以(yi)上(shang)(shang)服務業營(ying)業收(shou)入增(zeng)(zeng)長(chang)(chang)(chang)3.9%，增(zeng)(zeng)速(su)較(jiao)(jiao)上(shang)(shang)年(nian)(nian)(nian)提(ti)(ti)高(gao)0.8個百(bai)(bai)分(fen)(fen)點(dian)(dian)(dian)(dian)。2020年(nian)(nian)(nian)，全(quan)市(shi)固定資產(chan)投(tou)資增(zeng)(zeng)長(chang)(chang)(chang)2.9%，增(zeng)(zeng)速(su)較(jiao)(jiao)上(shang)(shang)年(nian)(nian)(nian)提(ti)(ti)高(gao)17.9個百(bai)(bai)分(fen)(fen)點(dian)(dian)(dian)(dian)。2020年(nian)(nian)(nian)，全(quan)市(shi)社會消費品零(ling)售總額(e)(e)增(zeng)(zeng)長(chang)(chang)(chang)0.3%，分(fen)(fen)別高(gao)于(yu)全(quan)國、全(quan)省平(ping)(ping)均水(shui)平(ping)(ping)4.2和0.3個百(bai)(bai)分(fen)(fen)點(dian)(dian)(dian)(dian)。2020年(nian)(nian)(nian)，全(quan)市(shi)完成一般公共預算收(shou)入252.39億(yi)元(yuan)，增(zeng)(zeng)長(chang)(chang)(chang)1.0%，較(jiao)(jiao)上(shang)(shang)年(nian)(nian)(nian)提(ti)(ti)高(gao)13.2個百(bai)(bai)分(fen)(fen)點(dian)(dian)(dian)(dian)。2020年(nian)(nian)(nian)，全(quan)市(shi)進(jin)出口總額(e)(e)1614.57億(yi)元(yuan)，增(zeng)(zeng)長(chang)(chang)(chang)15.1%，增(zeng)(zeng)速(su)較(jiao)(jiao)上(shang)(shang)年(nian)(nian)(nian)提(ti)(ti)高(gao)14.3個百(bai)(bai)分(fen)(fen)點(dian)(dian)(dian)(dian)，高(gao)于(yu)全(quan)省平(ping)(ping)均水(shui)平(ping)(ping)7.6個百(bai)(bai)分(fen)(fen)點(dian)(dian)(dian)(dian)。