An orthogonal experiment was conducted to investigate the effects of different concentrations of Ni²⁺,Cu²⁺,and Co²⁺,as well as different temperatures and light combinations,on seed germination features of Peganum harmala L and provide a basis for vegetation rehabilitation and ecological restoration in tail mining area.Results showed that low concentration of Ni²⁺,Cu²⁺,and Co²⁺ mixture solution was helpful to improve the Peganum harmala L germination potential,germination rate,and germination index and high concentration of the mixture solution showed significant inhibition.Peganum harmala L seedling growth was influenced by heavy metal ions concentration in the mixture solution in different extent,no matter the concentration was high or low.However,inhibiting effect of low concentration was not significant.In the treatment with 5 mg/L Ni²⁺,800 mg/L Cu²⁺,400 mg/L Co²⁺,25 ℃ temperature,and 12 h illumination,Peganum harmala L seeds germinated fast and germination rate was relatively high.Compared with different conditions,the optimum condition for Peganum harmala L seedling growth was found to be 100 mg/L Ni²⁺,100 mg/L Cu²⁺,50 mg/L Co²⁺,25 ℃ temperature,and 12 h illumination.