In　geo-engineering,　mechanical　problems　of　surcharge　loads　acting　on　ground　surface　and　shallow　tunnel　excavation　are　often　encountered.　When　the　complex　variable　method　is　applied,　such　problems　turn　to　non-zero　resultant　issues　and　generally　result　in　infinite　displacement　singularity　in　geomaterial　at　infinity,　which　violates　the　fact　that　displacement　components　at　infinity　should　be　zero　in　field　observations.　The　displacement　singularity　at　infinity　caused　by　non-zero　resultants　corresponds　non-zero　coefficients　of　logarithmic　items　in　complex　potentials.　To　eliminate　the　singularity　at　infinity,　the　symmetrical　method　is　adopted　so　that　the　far-field　displacement　obtained　from　the　modified　displacement　solution　conducted　by　the　complex　variable　method　would　be　logically　identical　to　the　reality.　Two　fundamental　cases　of　single　surcharge　load　acting　on　ground　surface　and　single　tunnel　excavation　are　presented　to　verify　the　modified　displacement　solution,　and　good　agreements　are　observed.　The　main　advantage　that　the　proposed　solution　eliminates　displacement　singularity　at　infinity　and　makes　far-field　displacement　logically　accord　with　field　observation　is　presented　by　comparing　to　the　original　solution.　The　drawback　that　the　proposed　solution　is　dependent　on　modified　depth　is　discussed　as　well.