Legal analysis: Step 1: Gross income this month-drug cost-material cost = net income;

Step 2: Withdraw 8% of the development fund; 8% of the development fund = (net income+4.) × 8

Step 3: Withdraw 1% of the assessment fund (returned after passing the year-end assessment); Withdraw 1% assessment fund = (net income+4.)-8% development fund × 1%;

step 4: doctor's salary = net income-8% of the development fund-1% of the assessment fund

Legal basis: Article 5 of the Labor Law of the People's Republic of China shall pay the employee himself monthly in the form of money. The wages of workers shall not be deducted or delayed without reason.