Batch equilibration experiment was conducted out to study the adsorptions of aniline and LAS and their interactions on Weihe riverbed sediments. The results show that, LAS inhibits to the absorption of aniline on the sediments, and so as to the inhibition of aniline on LAS adsorption on the sediments, because they compete with each other for adsorption sites on the sediments. The inhibitions are gotten increasing with rising in their concentrations, the adsorption models of LAS and aniline on the sediments are hardly affected by each other, however, varied with the changes in pH. The adsorption model of aniline obeys Henry equation under pH 5, and follows Freundlich or Langmuir equation under pH 7 or 9 respectively. The affect of aniline on the adsorption of LAS depends mainly on LAS concentration, and gets more distinct with increasing in the concentration. 