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Background: In China, the mode of HIV transmission and the types and routes of drug use have changed in the past decade. HIV testing amongst drug users needs further improvement. Methods: Interviewer-administered questionnaires were used for data collection amongst 600 heterosexual drug users from the community and a municipal detention centre, where criminal suspects are supervised. Descriptive statistics, univariate analysis and multilevel logistic regression analysis were used to identify the factors associated with HIV testing amongst heterosexual drug users. All participants were screened HIV and sexually transmitted infections. Results: Amongst 600 participants, 554 (92.3%) were methamphetamine users, and 155 (25.8%) underwent HIV testing in the past year. Multivariate analysis results revealed that drug users who were single (adjusted odds ratio(AOR) = 1.923, 95% confidence interval(CI) = 1.189–3.109), had less knowledge of HIV (AOR = 1.706, 95% CI = 1.074–2.711), used only one kind of drug (AOR = 2.649, 95% CI = 1.155–6.077), used drug via a non-injection route (AOR = 2.121, 95% CI = 1.103–4.078), did not receive free condoms (AOR = 2.307, 95% CI = 1.129–4.715) and who did not receive free publicity material from health workers in the past year (AOR = 2.828, 95% CI = 1.757–4.552) were less likely to undergo HIV testing. A total of 594 participants underwent HIV and syphilis screening in this survey. Amongst these participants, 2 (0.3%) were HIV antibody positive, and 88 (14.8%) showed positive results in both non-treponemal test (rapid plasma regain test) and treponemal test (Treponema pallidum particle agglutination test) for the first time. Conclusions: The rate of HIV test uptake amongst heterosexual drug users in China remains low. Thus, more specific interventions are urgently needed to improve the utilisation of HIV testing amongst heterosexual drug users, particularly amongst non-injection drug users in China. [ABSTRACT FROM AUTHOR]