sqlUpdate = "update tacid SET afeature = '" & xafeature & "',amolecular='" & xamolecular & "',aisolectric='" & xaisolectric & "',acarboxy='" & xacarboxy & "',aamino='" & xaamino & "' where aName='" & xaname & "'"将sql语句换成这个,你之前写的有一个分号少了