氢原子中1 s电子的电子云呈球形，电子的最大几率密度分布出现在玻尔半径a₀的球壳内，认为几率密度分布及电子云属统计规律，意味着已经使用了宏观时标，这样就使氢分子体系中能量和时间的作用量远大于普郎克常数；根据电子云的交叠，用经典力学计算了基态氢分子的结构常数，获得键长、键能及力常数的表达式分别为R_e = 〓a₀，D_e = ze/4〓a₀,k = ze/2〓，采用原子单位（a.u.）时z、e及a₀均为1，获得R_e=1.414 a.u.，D_e=0.177 a.u.，k=0.354 a.u.，这些数值与实验值的相对误差分别<1%，<2%和<4%；成键模型直观，物理意义明确，计算中不含任何人为性参数。

The 1s electron cloud in hydrogen atom has the largest probability density distribution around a spherical shell with Bohr radius a₀. The author thinks the probability density distribution and electron cloud belong in fact, to statistic regularity, and imply a macro-time scale is used, therefore in hydrogen molecule the product of energy and time is far larger than Planck Constant. Based on the overlap of electron cloud, the ground state hydrogen molecule structural parameters are calculated with the classical mechanics, and the hydrogen molecule bond-length R_e, bonding-energy D_e and force constant k are represented R_e = 〓a₀,D_e = ze/4〓a₀,k = ze/2〓 , respectively. When atomic-unit is used, z, e and a₀ are all 1, and there is R_e = 1.414 a. u. , D_e = 0.177 a. u. , k =0.354 a. u. . Compared with experimental values, the respective errors are less than 1 % , 2% and 4% . In this calculation, hydrogen molecule chemical bonding model is concise and has clear physical meaning, and no any artificial parameters are introduced.