"SELECT spxx.商品名称,spxx.类别,spxx.零售价,gys.厂商名称,gys.厂商地址,gys.电话,jhxx.进货数量,chmx.销售数量" & _
             "FROM (spxx " & _
             "INNER JOIN gys ON spxx.厂商编号= gys.厂商编号) " & _  
             "INNER JOIN jhxx ON spxx.商品编号= jhxx.商品编号) " & _
             "INNER JOIN chmx ON spxx.商品编号= chmx.商品编号) " & _
             "WHERE  spxx.商品编号='" & Request("spbh") & "' OR spxx.类别='" & Request("splb") & "' "

有没有错误你测试一下不就知道了