The calcicole,Eurycorymbus cavaleriei,and calcifuge,Rhododendron decorum,were used as experimental materials to compare the responses of growth,chlorophyll content,osmoregulation and mineral element accumulation to different exogenous Ca²⁺ by addition 0,5,10,25 and 50 mmol/L Ca²⁺ in the Hoadland solution for culture medium.The results showed that:(1)Several parameters of E.cavaleriei such as plant height,leaf dry weight,leaf length,leaf width,leaf index,stem diameter,contents of chlorophyll and protein were promoted,and contents of proline and soluble sugar had no significant changes,with the increase of exogenous Ca²⁺ concentration.However,for R.decorum,these parameters appeared opposite trend and shown a restrained result.The contents of chlorophyll and protein decreased and the contents of proline and soluble sugar increased.The contents of chlorophyll and protein of E.cavaleriei were 2.99 mg/g and 17.10 mg/g,respectively,while the contents of chlorophyll and protein of R.decorum were 1.39 mg/g and 14.30 mg/g,respectively with 50 mmol/L Ca²⁺ in the Hoadland solution.(2)E.cavaleriei have Ca,K homeostasis and higher P,N absorption,while R.decorum is remarkable calcium accumulation and constraint of P,N absorption at lower calcium concentration.