The　primary　aim　of　this　study　was　to　compare　different　screening　tools　for　problematic　internet　pornography　use　(IPU)　and　identify　the　most　accurate　measure.　The　reliability　and　validity　of　three　scales,　namely,　the　Problematic　Pornography　Consumption　Scale　(PPCS),　Problematic　Pornography　Use　Scale　(PPUS),　and　Short　Internet　Addiction　Test　Adapted　to　Online　Sexual　Activities(s-IAT-sex),　were　examined　using　three　homogeneous　groups,　respectively.　A　total　of　972　adults　(mean　age　=　24.8)　from　28　provinces/regions　in　China　participated　in　the　quantitative　part　(QUAN).　The　Brief　Pornography　Screener　served　as　the　reference　standard.　The　PPCS　demonstrated　stronger　reliability　and　validity,　including　criterion　validity,　as　well　as　greater　sensitivity　and　acceptable　specificity;　therefore,　it　was　considered　to　be　the　more　accurate　screening　instrument.　In　the　qualitative　part　(QUAL),　we　interviewed　22　volunteers　and　11　therapists　(who　had　worked　with　individuals　with　problematic　IPU)　to　examine　their　perspectives　on　the　core　features　of　problematic　IPU　and　dimensions　of　the　PPCS.　Almost　all　the　interviewees　endorsed　the　structure　of　the　PPCS.　These　findings　encourage　the　use　of　the　PPCS　in　future　research　studies　and　underscore　its　screening　applications　because　of　its　ability　to　classify　IPU　as　problematic　or　nonproblematic.