根據市級生產(chan)(chan)總(zong)值(zhi)(zhi)統(tong)一核(he)算(suan)結(jie)果，2020年(nian)威海市生產(chan)(chan)總(zong)值(zhi)(zhi)3017.79億(yi)(yi)元(yuan)，按可比價格計算(suan)，增(zeng)(zeng)長3.0%。分產(chan)(chan)業看，第一產(chan)(chan)業增(zeng)(zeng)加(jia)值(zhi)(zhi)301.66億(yi)(yi)元(yuan)，增(zeng)(zeng)長2.9%；第二產(chan)(chan)業增(zeng)(zeng)加(jia)值(zhi)(zhi)1162.27億(yi)(yi)元(yuan)，增(zeng)(zeng)長2.1%；第三(san)產(chan)(chan)業增(zeng)(zeng)加(jia)值(zhi)(zhi)1553.86億(yi)(yi)元(yuan)，增(zeng)(zeng)長3.7%。全(quan)市三(san)次產(chan)(chan)業結(jie)構由上年(nian)的9.7:40.4:49.9調整為10.0:38.5:51.5。

2020年(nian)，威海市(shi)農林牧漁業總(zong)產值(zhi)按可(ke)比價格計(ji)算(suan)增(zeng)(zeng)(zeng)(zeng)(zeng)長(chang)(chang)(chang)3.2%，增(zeng)(zeng)(zeng)(zeng)(zeng)速(su)較(jiao)上(shang)年(nian)提高(gao)(gao)2.6個(ge)(ge)(ge)百(bai)分(fen)點。2020年(nian)，全(quan)(quan)(quan)(quan)市(shi)規模(mo)以(yi)上(shang)工(gong)業增(zeng)(zeng)(zeng)(zeng)(zeng)加值(zhi)增(zeng)(zeng)(zeng)(zeng)(zeng)長(chang)(chang)(chang)4.6%，增(zeng)(zeng)(zeng)(zeng)(zeng)速(su)較(jiao)上(shang)年(nian)提高(gao)(gao)2.3個(ge)(ge)(ge)百(bai)分(fen)點。2020年(nian)，全(quan)(quan)(quan)(quan)市(shi)規模(mo)以(yi)上(shang)服務(wu)業營業收入(ru)增(zeng)(zeng)(zeng)(zeng)(zeng)長(chang)(chang)(chang)3.9%，增(zeng)(zeng)(zeng)(zeng)(zeng)速(su)較(jiao)上(shang)年(nian)提高(gao)(gao)0.8個(ge)(ge)(ge)百(bai)分(fen)點。2020年(nian)，全(quan)(quan)(quan)(quan)市(shi)固定資(zi)產投資(zi)增(zeng)(zeng)(zeng)(zeng)(zeng)長(chang)(chang)(chang)2.9%，增(zeng)(zeng)(zeng)(zeng)(zeng)速(su)較(jiao)上(shang)年(nian)提高(gao)(gao)17.9個(ge)(ge)(ge)百(bai)分(fen)點。2020年(nian)，全(quan)(quan)(quan)(quan)市(shi)社(she)會(hui)消費品零售(shou)總(zong)額增(zeng)(zeng)(zeng)(zeng)(zeng)長(chang)(chang)(chang)0.3%，分(fen)別高(gao)(gao)于(yu)全(quan)(quan)(quan)(quan)國、全(quan)(quan)(quan)(quan)省(sheng)平均(jun)水平4.2和(he)0.3個(ge)(ge)(ge)百(bai)分(fen)點。2020年(nian)，全(quan)(quan)(quan)(quan)市(shi)完成一般公共預(yu)算(suan)收入(ru)252.39億元，增(zeng)(zeng)(zeng)(zeng)(zeng)長(chang)(chang)(chang)1.0%，較(jiao)上(shang)年(nian)提高(gao)(gao)13.2個(ge)(ge)(ge)百(bai)分(fen)點。2020年(nian)，全(quan)(quan)(quan)(quan)市(shi)進出口總(zong)額1614.57億元，增(zeng)(zeng)(zeng)(zeng)(zeng)長(chang)(chang)(chang)15.1%，增(zeng)(zeng)(zeng)(zeng)(zeng)速(su)較(jiao)上(shang)年(nian)提高(gao)(gao)14.3個(ge)(ge)(ge)百(bai)分(fen)點，高(gao)(gao)于(yu)全(quan)(quan)(quan)(quan)省(sheng)平均(jun)水平7.6個(ge)(ge)(ge)百(bai)分(fen)點。