Wax　deposition　detection　in　nonmetallic　pipelines　is　an　important　requirement　in　the　oil　industry.　In　this　paper,　an　ECT　(electrical　capacitance　tomography)　sensor　is　developed　for　wax　deposition　detection　in　nonmetallic　pipelines.　Four　wax　models　with　different　concentrations　were　established　for　detection.　These　models　were　analyzed　through　simulations　and　practical　experiments　simultaneously　and　data　were　compared.　A　linear　back　projection　algorithmis　applied　to　reconstruct　the　image　with　both　simulated　and　experimental　data.　A　comparison　of　binary　images　with　different　concentration　of　stratified　flow　was　demonstrated;　this　illustrates　that　the　difference　in　concentration　between　the　experimental　results　and　profile　distribution　is　less　than　1.2%.　The　experimental　results　indicate　that　the　ECT　systemis　valid　and　feasible　for　detecting　the　degree　of　wax　deposition　in　the　nonmetallic　pipelines.