Three kinds of coal-based isomeric alkylbenzene sulfonates, including sodium dodecylbenzene sulfonate (SDDBS), sodium C6 dimer alkylbenzene sulfonate (SC6DBS) and sodium dihexylbenzene sulfonate (SDHBS), were used as raw materials to compound with isomeric tridecanol polyoxyethylene ether (9) (IC13EO9) to obtain three compound systems SDDBS/IC13EO9, SC6DBS/IC13EO9 and SDHBS/IC13EO9. Based on UV-Vis, surface tensiometer, dynamic light scattering instrument, drop shape analyzer, vertical decontamination machine and other characterization and testing. The results showed that the compound system of alkylbenzene sulfonate and IC13EO9 with a mass ratio of 5∶5 showed the best synergistic effect. The SDHBS/IC13EO9 exhibited good wettability (water contact angle of 53.0 ° at 30 s), foam properties (foam half-life of 349.2 s) and emulsifying properties (emulsifying time of 1035 s), and had comparable decontamination performance to commercial sodium dodecyl benzene sulfonate (LAS)/IC13EO9 complex system.